diff --git a/Cargo.lock b/Cargo.lock
index b1480da..b2c75f6 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3286,7 +3286,7 @@ dependencies = [
 ]
 
 [[package]]
-name = "smart-iv-calculator"
+name = "smart_iv_calculator"
 version = "0.1.0"
 dependencies = [
  "bevy",
diff --git a/Cargo.toml b/Cargo.toml
index fe96292..014f25e 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,5 +1,5 @@
 [package]
-name = "smart-iv-calculator"
+name = "smart_iv_calculator"
 version = "0.1.0"
 edition = "2021"
 
diff --git a/data/natures.json b/data/natures.json
index 857ee51..c9998ed 100644
--- a/data/natures.json
+++ b/data/natures.json
@@ -2,6 +2,7 @@
         "name": "Hardy",
         "alias": "hardy",
         "id": 1,
+        "pid": 0,
         "increased": null,
         "decreased": null
     },
@@ -9,6 +10,7 @@
         "name": "Bold",
         "alias": "bold",
         "id": 2,
+        "pid": 5,
         "increased": "defense",
         "decreased": "attack"
     },
@@ -16,6 +18,7 @@
         "name": "Modest",
         "alias": "modest",
         "id": 3,
+        "pid": 15,
         "increased": "special_attack",
         "decreased": "attack"
     },
@@ -23,6 +26,7 @@
         "name": "Calm",
         "alias": "calm",
         "id": 4,
+        "pid": 20,
         "increased": "special_defense",
         "decreased": "attack"
     },
@@ -30,6 +34,7 @@
         "name": "Timid",
         "alias": "timid",
         "id": 5,
+        "pid": 10,
         "increased": "speed",
         "decreased": "attack"
     },
@@ -37,6 +42,7 @@
         "name": "Lonely",
         "alias": "lonely",
         "id": 6,
+        "pid": 1,
         "increased": "attack",
         "decreased": "defense"
     },
@@ -44,6 +50,7 @@
         "name": "Docile",
         "alias": "docile",
         "id": 7,
+        "pid": 6,
         "increased": null,
         "decreased": null
     },
@@ -51,6 +58,7 @@
         "name": "Mild",
         "alias": "mild",
         "id": 8,
+        "pid": 16,
         "increased": "special_attack",
         "decreased": "defense"
     },
@@ -58,6 +66,7 @@
         "name": "Gentle",
         "alias": "gentle",
         "id": 9,
+        "pid": 21,
         "increased": "special_defense",
         "decreased": "defense"
     },
@@ -65,6 +74,7 @@
         "name": "Hasty",
         "alias": "hasty",
         "id": 10,
+        "pid": 11,
         "increased": "speed",
         "decreased": "defense"
     },
@@ -72,6 +82,7 @@
         "name": "Adamant",
         "alias": "adamant",
         "id": 11,
+        "pid": 3,
         "increased": "attack",
         "decreased": "special_attack"
     },
@@ -79,6 +90,7 @@
         "name": "Impish",
         "alias": "impish",
         "id": 12,
+        "pid": 8,
         "increased": "defense",
         "decreased": "special_attack"
     },
@@ -86,6 +98,7 @@
         "name": "Bashful",
         "alias": "bashful",
         "id": 13,
+        "pid": 18,
         "increased": null,
         "decreased": null
     },
@@ -93,6 +106,7 @@
         "name": "Careful",
         "alias": "careful",
         "id": 14,
+        "pid": 23,
         "increased": "special_defense",
         "decreased": "special_attack"
     },
@@ -100,6 +114,7 @@
         "name": "Rash",
         "alias": "rash",
         "id": 15,
+        "pid": 19,
         "increased": "special_attack",
         "decreased": "special_defense"
     },
@@ -107,6 +122,7 @@
         "name": "Jolly",
         "alias": "jolly",
         "id": 16,
+        "pid": 13,
         "increased": "speed",
         "decreased": "special_attack"
     },
@@ -114,6 +130,7 @@
         "name": "Naughty",
         "alias": "naughty",
         "id": 17,
+        "pid": 4,
         "increased": "attack",
         "decreased": "special_defense"
     },
@@ -121,6 +138,7 @@
         "name": "Lax",
         "alias": "lax",
         "id": 18,
+        "pid": 9,
         "increased": "defense",
         "decreased": "special_defense"
     },
@@ -128,6 +146,7 @@
         "name": "Quirky",
         "alias": "quirky",
         "id": 19,
+        "pid": 24,
         "increased": null,
         "decreased": null
     },
@@ -135,6 +154,7 @@
         "name": "Naive",
         "alias": "naive",
         "id": 20,
+        "pid": 14,
         "increased": "speed",
         "decreased": "special_defense"
     },
@@ -142,6 +162,7 @@
         "name": "Brave",
         "alias": "brave",
         "id": 21,
+        "pid": 2,
         "increased": "attack",
         "decreased": "speed"
     },
@@ -149,6 +170,7 @@
         "name": "Relaxed",
         "alias": "relaxed",
         "id": 22,
+        "pid": 7,
         "increased": "defense",
         "decreased": "speed"
     },
@@ -156,6 +178,7 @@
         "name": "Quiet",
         "alias": "quiet",
         "id": 23,
+        "pid": 17,
         "increased": "special_attack",
         "decreased": "speed"
     },
@@ -163,6 +186,7 @@
         "name": "Sassy",
         "alias": "sassy",
         "id": 24,
+        "pid": 22,
         "increased": "special_defense",
         "decreased": "speed"
     },
@@ -170,6 +194,7 @@
         "name": "Serious",
         "alias": "serious",
         "id": 25,
+        "pid": 12,
         "increased": null,
         "decreased": null
     }
diff --git a/src/bin/ivcalc.rs b/src/bin/ivcalc.rs
new file mode 100644
index 0000000..e119bfa
--- /dev/null
+++ b/src/bin/ivcalc.rs
@@ -0,0 +1,5 @@
+use smart_iv_calculator::ivcalc;
+
+fn main() {
+    ivcalc::run()
+}
diff --git a/src/bin/ivpeek.rs b/src/bin/ivpeek.rs
new file mode 100644
index 0000000..d9e0960
--- /dev/null
+++ b/src/bin/ivpeek.rs
@@ -0,0 +1,5 @@
+use smart_iv_calculator::ivpeek;
+
+fn main() {
+    ivpeek::run()
+}
diff --git a/src/database.rs b/src/database.rs
index 2e7c4e1..4e1f816 100644
--- a/src/database.rs
+++ b/src/database.rs
@@ -1,28 +1,13 @@
+use std::collections::HashMap;
+
 use bevy::prelude::*;
 use json::JsonValue;
-use lazy_static::lazy_static;
-use std::{
-    collections::HashMap,
-    fs,
-    path::{Path, PathBuf},
+
+use crate::{
+    json::{read_characteristics, read_natures, read_pokedex},
+    pokemon::*,
 };
 
-use crate::pokemon::*;
-
-lazy_static! {
-    static ref DATA_DIR: PathBuf = "./data".into();
-    pub static ref TYPE_MAP: HashMap<u8, Type> = {
-        let types = parse_json_file(DATA_DIR.join("types.json"));
-        let mut map = HashMap::new();
-        for type_data in types.members() {
-            if let Some(type_data) = Type::from_json(type_data) {
-                map.insert(type_data.id, type_data);
-            }
-        }
-        map
-    };
-}
-
 pub struct DatabasePlugin;
 
 impl Plugin for DatabasePlugin {
@@ -60,28 +45,7 @@ fn database_setup(
     mut nature_database: ResMut<Database<Nature>>,
     mut characteristic_database: ResMut<Database<Characteristic>>,
 ) {
-    let natures = parse_json_file(DATA_DIR.join("natures.json"));
-    nature_database.populate_from_json(&natures);
-    let pokedex = parse_json_file(DATA_DIR.join("pokedex.json"));
-    pokemon_database.populate_from_json(&pokedex);
-    let characteristics = parse_json_file(DATA_DIR.join("characteristics.json"));
-    characteristic_database.populate_from_json(&characteristics);
-}
-
-pub fn parse_json_file<P: AsRef<Path>>(path: P) -> JsonValue {
-    json::parse(fs::read_to_string(path).unwrap().as_ref()).unwrap()
-}
-
-pub fn load_url_asset(
-    url: String,
-    path: PathBuf,
-    assets: &Res<AssetServer>,
-) -> Result<Handle<Image>, Box<dyn std::error::Error>> {
-    let system_path = Path::new("assets").join(&path);
-    if Path::exists(&path) {
-        return Ok(assets.load(path));
-    }
-    let data = reqwest::blocking::get(&url)?.bytes()?;
-    fs::write(&system_path, data).unwrap();
-    Ok(assets.load(path))
+    nature_database.populate_from_json(&read_natures());
+    pokemon_database.populate_from_json(&read_pokedex());
+    characteristic_database.populate_from_json(&read_characteristics());
 }
diff --git a/src/main.rs b/src/ivcalc.rs
similarity index 77%
rename from src/main.rs
rename to src/ivcalc.rs
index 30ab91c..8d7ee70 100644
--- a/src/main.rs
+++ b/src/ivcalc.rs
@@ -1,12 +1,10 @@
 use bevy::{prelude::*, window::WindowResolution};
 
-pub mod database;
-pub mod inspector;
-pub mod pokemon;
-pub mod server;
-pub mod ui;
+mod calculator;
+mod server;
+mod ui;
 
-fn main() {
+pub fn run() {
     App::new()
         .add_plugins(
             DefaultPlugins
@@ -21,8 +19,8 @@ fn main() {
                 })
                 .set(ImagePlugin::default_nearest()),
         )
-        .add_plugin(database::DatabasePlugin)
-        .add_plugin(inspector::InspectorPlugin)
+        .add_plugin(crate::database::DatabasePlugin)
+        .add_plugin(calculator::CalculatorPlugin)
         .add_plugin(ui::UiPlugin)
         .add_plugin(server::ServerPlugin)
         .run();
diff --git a/src/inspector.rs b/src/ivcalc/calculator.rs
similarity index 66%
rename from src/inspector.rs
rename to src/ivcalc/calculator.rs
index 172e72c..d0c0e40 100644
--- a/src/inspector.rs
+++ b/src/ivcalc/calculator.rs
@@ -1,19 +1,25 @@
+use std::{
+    fs,
+    path::{Path, PathBuf},
+};
+
 use bevy::prelude::*;
 use bevy_egui::EguiContexts;
 
-use crate::{
-    database::{load_url_asset, Database},
-    pokemon::*,
+use crate::database::*;
+use crate::pokemon::*;
+
+use super::{
     server::Request,
     ui::{UiAssets, UiState},
 };
 
-pub struct InspectorPlugin;
+pub struct CalculatorPlugin;
 
-impl Plugin for InspectorPlugin {
+impl Plugin for CalculatorPlugin {
     fn build(&self, app: &mut App) {
-        app.register_type::<Inspector>()
-            .insert_resource(Inspector::default())
+        app.register_type::<Calculator>()
+            .insert_resource(Calculator::default())
             .add_system(state_changed)
             .add_system(request_handler.in_base_set(CoreSet::PreUpdate));
     }
@@ -21,7 +27,7 @@ impl Plugin for InspectorPlugin {
 
 #[derive(Reflect, Resource, Default, Debug, Clone)]
 #[reflect(Resource)]
-pub struct Inspector {
+pub struct Calculator {
     pub pokemon: Option<Pokemon>,
     pub nature: Option<Nature>,
     pub characteristic: Option<Characteristic>,
@@ -29,15 +35,15 @@ pub struct Inspector {
 }
 
 fn state_changed(
-    inspector: Res<Inspector>,
+    calculator: Res<Calculator>,
     assets: Res<AssetServer>,
     mut ui_assets: ResMut<UiAssets>,
     mut contexts: EguiContexts,
 ) {
-    if let (Some(pokemon), true) = (inspector.pokemon.as_ref(), inspector.is_changed()) {
+    if let (Some(pokemon), true) = (calculator.pokemon.as_ref(), calculator.is_changed()) {
         if !ui_assets.sprite_map.contains_key(&pokemon.key()) {
             let handle = load_url_asset(
-                pokemon.get_url(),
+                pokemon.sprite_url(),
                 format!("cache/{name}.png", name = pokemon.key()).into(),
                 &assets,
             );
@@ -53,7 +59,7 @@ fn state_changed(
 
 fn request_handler(
     mut request_events: EventReader<Request>,
-    mut inspector: ResMut<Inspector>,
+    mut calculator: ResMut<Calculator>,
     mut ui: ResMut<UiState>,
     characteristics: Res<Database<Characteristic>>,
     natures: Res<Database<Nature>>,
@@ -62,10 +68,10 @@ fn request_handler(
         info!("{:#}", request);
         match request.urn.as_str() {
             "clear" => {
-                inspector.pokemon = None;
-                inspector.nature = None;
-                inspector.characteristic = None;
-                inspector.derived_stats = DerivedStats::default();
+                calculator.pokemon = None;
+                calculator.nature = None;
+                calculator.characteristic = None;
+                calculator.derived_stats = DerivedStats::default();
                 ui.name = String::from("");
                 ui.level = String::from("");
                 ui.derived_stats.clear();
@@ -77,11 +83,11 @@ fn request_handler(
                 }
                 if let Some(level) = data["level"].as_i32() {
                     ui.level = level.to_string();
-                    inspector.derived_stats.level = Some(level);
+                    calculator.derived_stats.level = Some(level);
                 }
                 if let Some(nature) = data["nature"].as_str() {
                     if let Some(nature) = natures.map.get(&nature.to_lowercase()).cloned() {
-                        inspector.nature = Some(nature);
+                        calculator.nature = Some(nature);
                     }
                 }
                 if let Some(characteristic) = data["characteristic"].as_str() {
@@ -90,13 +96,13 @@ fn request_handler(
                         .get(&characteristic.to_lowercase())
                         .cloned()
                     {
-                        inspector.characteristic = Some(characteristic);
+                        calculator.characteristic = Some(characteristic);
                     }
                 }
                 for stat in BaseStat::all() {
                     if let Some(value) = data[stat.key()].as_i32() {
                         ui.derived_stats.insert(stat, value.to_string());
-                        inspector.derived_stats.set_stat_value(stat, Some(value));
+                        calculator.derived_stats.set_stat_value(stat, Some(value));
                     }
                 }
             }
@@ -106,3 +112,17 @@ fn request_handler(
         }
     }
 }
+
+pub fn load_url_asset(
+    url: String,
+    path: PathBuf,
+    assets: &Res<AssetServer>,
+) -> Result<Handle<Image>, Box<dyn std::error::Error>> {
+    let system_path = Path::new("assets").join(&path);
+    if Path::exists(&path) {
+        return Ok(assets.load(path));
+    }
+    let data = reqwest::blocking::get(&url)?.bytes()?;
+    fs::write(&system_path, data).unwrap();
+    Ok(assets.load(path))
+}
diff --git a/src/server.rs b/src/ivcalc/server.rs
similarity index 100%
rename from src/server.rs
rename to src/ivcalc/server.rs
diff --git a/src/ui.rs b/src/ivcalc/ui.rs
similarity index 93%
rename from src/ui.rs
rename to src/ivcalc/ui.rs
index bd72855..bdadff8 100644
--- a/src/ui.rs
+++ b/src/ivcalc/ui.rs
@@ -3,7 +3,10 @@ use bevy_egui::{egui, EguiContexts, EguiPlugin};
 use lazy_static::lazy_static;
 use std::collections::HashMap;
 
-use crate::{database::Database, inspector::Inspector, pokemon::*};
+use crate::database::Database;
+use crate::pokemon::*;
+
+use super::calculator::Calculator;
 
 const INPUT_LABEL_WIDTH: f32 = 100.0;
 const INPUT_TEXT_WIDTH: f32 = 150.0;
@@ -69,18 +72,18 @@ fn load_assets(mut ui_assets: ResMut<UiAssets>, assets: Res<AssetServer>) {
 fn handle_state(
     ui_state: Res<UiState>,
     pokemon: Res<Database<Pokemon>>,
-    mut inspector: ResMut<Inspector>,
+    mut calculator: ResMut<Calculator>,
 ) {
     if ui_state.is_changed() {
         if let Some(pokemon) = pokemon.map.get(ui_state.name.to_lowercase().as_str()) {
-            inspector.pokemon = Some(pokemon.clone());
+            calculator.pokemon = Some(pokemon.clone());
         }
     }
 }
 
 fn ui_system(
     mut contexts: EguiContexts,
-    mut inspector: ResMut<Inspector>,
+    mut calculator: ResMut<Calculator>,
     ui_assets: Res<UiAssets>,
     mut ui_state: ResMut<UiState>,
     mut rendered_texture_id: Local<egui::TextureId>,
@@ -96,11 +99,11 @@ fn ui_system(
     egui::CentralPanel::default().show(contexts.ctx_mut(), |ui| {
         let sprite_size = egui::Vec2::new(128., 128.);
 
-        let pokemon = inspector.pokemon.clone();
+        let pokemon = calculator.pokemon.clone();
         let pokemon = pokemon.as_ref();
-        let nature = inspector.nature.clone();
+        let nature = calculator.nature.clone();
         let nature = nature.as_ref();
-        let characteristic = inspector.characteristic.clone();
+        let characteristic = calculator.characteristic.clone();
         let characteristic = characteristic.as_ref();
 
         // Pokemon
@@ -128,11 +131,11 @@ fn ui_system(
             egui::ComboBox::new("nature", "")
                 .selected_text(format!("{}", nature.map_or("-", |c| &c.name)))
                 .show_ui(ui, |ui| {
-                    ui.selectable_value(&mut inspector.nature, None, "-");
+                    ui.selectable_value(&mut calculator.nature, None, "-");
                     let mut chars: Vec<_> = natures.map.values().collect();
                     chars.sort_by_key(|c| c.name.clone());
                     for char in chars {
-                        ui.selectable_value(&mut inspector.nature, Some(char.clone()), &char.name);
+                        ui.selectable_value(&mut calculator.nature, Some(char.clone()), &char.name);
                     }
                 });
         });
@@ -147,12 +150,12 @@ fn ui_system(
             egui::ComboBox::new("characteristic", "")
                 .selected_text(format!("{}", characteristic.map_or("-", |c| &c.name)))
                 .show_ui(ui, |ui| {
-                    ui.selectable_value(&mut inspector.characteristic, None, "-");
+                    ui.selectable_value(&mut calculator.characteristic, None, "-");
                     let mut chars: Vec<_> = characteristics.map.values().collect();
                     chars.sort_by_key(|c| c.name.clone());
                     for char in chars {
                         ui.selectable_value(
-                            &mut inspector.characteristic,
+                            &mut calculator.characteristic,
                             Some(char.clone()),
                             &char.name,
                         );
@@ -212,7 +215,7 @@ fn ui_system(
                             if input.changed() {
                                 *value = digit_filter(value);
                                 if let Ok(value) = value.parse::<StatValue>() {
-                                    inspector.derived_stats.level = Some(value);
+                                    calculator.derived_stats.level = Some(value);
                                 }
                             }
                             if input.gained_focus() {
@@ -318,7 +321,7 @@ fn ui_system(
                         *value = digit_filter(value);
                         if let (Ok(value), derived) = (
                             value.parse::<StatValue>(),
-                            inspector.derived_stats.value_mut(stat),
+                            calculator.derived_stats.value_mut(stat),
                         ) {
                             *derived = Some(value);
                         }
@@ -330,8 +333,8 @@ fn ui_system(
 
                 let possible_ivs = if let (Some(pokemon), Some(level), Some(derived_stat)) = (
                     pokemon,
-                    inspector.derived_stats.level,
-                    inspector.derived_stats.value(stat),
+                    calculator.derived_stats.level,
+                    calculator.derived_stats.value(stat),
                 ) {
                     calculate_possible_ivs(
                         stat,
diff --git a/src/ivpeek.rs b/src/ivpeek.rs
new file mode 100644
index 0000000..75b3f1a
--- /dev/null
+++ b/src/ivpeek.rs
@@ -0,0 +1,24 @@
+use bevy::{prelude::*, window::WindowResolution};
+
+mod inspector;
+mod ui;
+
+pub fn run() {
+    App::new()
+        .add_plugins(
+            DefaultPlugins
+                .set(WindowPlugin {
+                    primary_window: Some(Window {
+                        resolution: WindowResolution::new(720., 540.),
+                        resizable: false,
+                        title: "Smart IV peeker".to_string(),
+                        ..default()
+                    }),
+                    ..default()
+                })
+                .set(ImagePlugin::default_nearest()),
+        )
+        .add_plugin(crate::database::DatabasePlugin)
+        .add_plugin(ui::UiPlugin)
+        .run()
+}
diff --git a/src/ivpeek/inspector.rs b/src/ivpeek/inspector.rs
new file mode 100644
index 0000000..e040521
--- /dev/null
+++ b/src/ivpeek/inspector.rs
@@ -0,0 +1,34 @@
+use std::collections::HashMap;
+
+use bevy::prelude::*;
+
+use crate::pokemon::*;
+
+pub struct InspectorPlugin;
+
+impl Plugin for InspectorPlugin {
+    fn build(&self, app: &mut App) {
+        app.insert_resource(Inspector::default());
+    }
+}
+
+#[derive(Resource, Default)]
+pub struct Inspector {
+    pub allies: Vec<PokemonInstance>,
+    pub enemies: Vec<PokemonInstance>,
+}
+
+impl Inspector {
+    pub fn clear(&mut self) {
+        self.allies.clear();
+        self.enemies.clear();
+    }
+}
+
+#[derive(Default)]
+pub struct PokemonInstance {
+    pub pokemon: Pokemon,
+    pub nature: Option<Nature>,
+    pub ivs: HashMap<BaseStat, u8>,
+    pub evs: HashMap<BaseStat, u8>,
+}
diff --git a/src/ivpeek/ui.rs b/src/ivpeek/ui.rs
new file mode 100644
index 0000000..bb0c848
--- /dev/null
+++ b/src/ivpeek/ui.rs
@@ -0,0 +1,127 @@
+use bevy::prelude::*;
+use bevy_egui::{egui, EguiContexts, EguiPlugin};
+use lazy_static::lazy_static;
+use std::collections::HashMap;
+
+use crate::{database::Database, pokemon::*};
+
+use super::inspector::{Inspector, PokemonInstance};
+
+const BAR_HEIGHT: f32 = 12.0;
+const BASE_STAT_WIDTH_MULT: f32 = 1.0;
+const IV_WIDTH_MULT: f32 = 4.0;
+const EV_WIDTH_MULT: f32 = 1.0;
+
+lazy_static! {
+    static ref BASE_STAT_COLOR_RANGES: Vec<(u8, egui::Color32)> = vec![
+        (0, egui::Color32::from_rgb(255, 0, 0)),
+        (30, egui::Color32::from_rgb(255, 128, 0)),
+        (60, egui::Color32::from_rgb(255, 255, 0)),
+        (90, egui::Color32::from_rgb(128, 255, 0)),
+        (120, egui::Color32::from_rgb(0, 255, 0)),
+        (150, egui::Color32::from_rgb(0, 255, 128)),
+        (180, egui::Color32::from_rgb(0, 255, 255)),
+    ];
+    static ref IV_COLOR_RANGES: Vec<(u8, egui::Color32)> = vec![
+        (0, egui::Color32::from_rgb(255, 0, 0)),
+        (16, egui::Color32::from_rgb(255, 128, 0)),
+        (22, egui::Color32::from_rgb(255, 255, 0)),
+        (27, egui::Color32::from_rgb(128, 255, 0)),
+        (30, egui::Color32::from_rgb(0, 255, 0)),
+    ];
+    static ref COLUMNS: Vec<f32> = vec![
+        25.0,                           // Base stat
+        255.0 * BASE_STAT_WIDTH_MULT,   // Base stat bar
+        60.0,                           // Stat name
+        40.0,                           // IV value
+        32.0 * IV_WIDTH_MULT,           // IV bar
+        40.0,                           // EV value
+        255.0 * EV_WIDTH_MULT,          // EV bar
+    ];
+}
+
+pub struct UiPlugin;
+
+impl Plugin for UiPlugin {
+    fn build(&self, app: &mut App) {
+        app.add_plugin(EguiPlugin)
+            .insert_resource(Inspector::default())
+            .insert_resource(UiAssets::default())
+            .add_startup_system(load_assets)
+            .add_system(ui_system)
+            .add_startup_system(test_init);
+    }
+}
+
+fn test_init(mut inspector: ResMut<Inspector>, pokemon_database: Res<Database<Pokemon>>) {
+    inspector.enemies.push(PokemonInstance {
+        pokemon: pokemon_database.map.get("baltoy").unwrap().clone(),
+        ..default()
+    });
+}
+
+#[derive(Resource, Default)]
+pub struct UiAssets {
+    pub bar_handle: Handle<Image>,
+    pub sprite_map: HashMap<String, (Handle<Image>, egui::TextureId)>,
+}
+
+fn load_assets(mut ui_assets: ResMut<UiAssets>, assets: Res<AssetServer>) {
+    ui_assets.bar_handle = assets.load("ui/bar.png");
+}
+
+fn ui_system(
+    mut contexts: EguiContexts,
+    inspector: Res<Inspector>,
+    ui_assets: Res<UiAssets>,
+    mut rendered_texture_id: Local<egui::TextureId>,
+    mut is_initialized: Local<bool>,
+) {
+    if !*is_initialized {
+        *is_initialized = true;
+        *rendered_texture_id = contexts.add_image(ui_assets.bar_handle.clone_weak());
+    }
+
+    egui::CentralPanel::default().show(contexts.ctx_mut(), |ui| {
+        let sprite_size = egui::Vec2::new(128., 128.);
+        for instance in inspector.enemies.iter().chain(inspector.allies.iter()) {
+            let pokemon = instance.pokemon.clone();
+
+            // Sprite
+            ui.horizontal(|ui| {
+                ui.horizontal(|ui| {
+                    ui.set_min_size(sprite_size);
+                    if let Some((_, rendered_texture_id)) = ui_assets.sprite_map.get(&pokemon.key())
+                    {
+                        ui.add(egui::Image::new(*rendered_texture_id, sprite_size));
+                    }
+                });
+            });
+        }
+    });
+}
+
+fn nature_color(stat: BaseStat, nature: Option<&Nature>) -> egui::Color32 {
+    if let Some(nature) = nature {
+        if nature.increased == Some(stat) {
+            egui::Color32::from_rgb(255, 64, 192)
+        } else if nature.decreased == Some(stat) {
+            egui::Color32::from_rgb(64, 192, 255)
+        } else {
+            egui::Color32::LIGHT_GRAY
+        }
+    } else {
+        egui::Color32::LIGHT_GRAY
+    }
+}
+
+fn iv_color(iv: u8) -> egui::Color32 {
+    for (treshold, color) in IV_COLOR_RANGES.iter().rev() {
+        if iv >= *treshold {
+            return color.clone();
+        }
+    }
+    IV_COLOR_RANGES
+        .first()
+        .map_or(egui::Color32::LIGHT_GRAY, |(_, color)| color.clone())
+}
diff --git a/src/json.rs b/src/json.rs
new file mode 100644
index 0000000..cbde9f2
--- /dev/null
+++ b/src/json.rs
@@ -0,0 +1,43 @@
+use json::JsonValue;
+use lazy_static::lazy_static;
+use std::{
+    collections::HashMap,
+    fs,
+    path::{Path, PathBuf},
+};
+
+use crate::pokemon::*;
+
+lazy_static! {
+    static ref DATA_DIR: PathBuf = "./data".into();
+    pub static ref TYPE_MAP: HashMap<u8, Type> = {
+        let types = read_pokedex();
+        let mut map = HashMap::new();
+        for type_data in types.members() {
+            if let Some(type_data) = Type::from_json(type_data) {
+                map.insert(type_data.id, type_data);
+            }
+        }
+        map
+    };
+}
+
+pub fn parse_json_file<P: AsRef<Path>>(path: P) -> JsonValue {
+    json::parse(fs::read_to_string(path).unwrap().as_ref()).unwrap()
+}
+
+pub fn read_natures() -> JsonValue {
+    parse_json_file(DATA_DIR.join("natures.json"))
+}
+
+pub fn read_pokedex() -> JsonValue {
+    parse_json_file(DATA_DIR.join("pokedex.json"))
+}
+
+pub fn read_types() -> JsonValue {
+    parse_json_file(DATA_DIR.join("types.json"))
+}
+
+pub fn read_characteristics() -> JsonValue {
+    parse_json_file(DATA_DIR.join("characteristics.json"))
+}
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..c34afe1
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,5 @@
+pub mod database;
+pub mod ivcalc;
+pub mod ivpeek;
+pub mod json;
+pub mod pokemon;
diff --git a/src/pokemon.rs b/src/pokemon.rs
index 26f8571..558faf4 100644
--- a/src/pokemon.rs
+++ b/src/pokemon.rs
@@ -2,7 +2,7 @@ use bevy::reflect::{FromReflect, Reflect};
 use lazy_static::lazy_static;
 use std::{collections::HashMap, fmt};
 
-use crate::database::TYPE_MAP;
+use crate::json::TYPE_MAP;
 
 pub type BaseValue = u8;
 pub type StatValue = i32;
@@ -103,7 +103,7 @@ impl Pokemon {
         }
     }
 
-    pub fn get_url(&self) -> String {
+    pub fn sprite_url(&self) -> String {
         format!(
             "https://img.pokemondb.net/sprites/{gen}/normal/{name}.png",
             gen = self.get_sprite_gen(),
@@ -183,6 +183,18 @@ impl BaseStat {
             BaseStat::Speed,
         ]
     }
+
+    pub fn from_str(str: &str) -> Option<Self> {
+        match str {
+            "hp" => Some(BaseStat::Hp),
+            "attack" => Some(BaseStat::Attack),
+            "defense" => Some(BaseStat::Defense),
+            "special_attack" => Some(BaseStat::SpecialAttack),
+            "special_defense" => Some(BaseStat::SpecialDefense),
+            "speed" => Some(BaseStat::Speed),
+            _ => None,
+        }
+    }
 }
 
 impl GetKey for BaseStat {
@@ -238,6 +250,7 @@ impl GetKey for Type {
 #[derive(Default, Debug, Clone, Reflect, FromReflect, PartialEq)]
 pub struct Nature {
     pub id: u8,
+    pub pid: u8,
     pub name: String,
     pub alias: String,
     pub increased: Option<BaseStat>,
@@ -260,6 +273,7 @@ impl FromJson for Nature {
     fn from_json(json: &json::JsonValue) -> Option<Self> {
         Some(Self {
             id: json["id"].as_u8()?,
+            pid: json["pid"].as_u8()?,
             name: json["name"].as_str()?.to_string(),
             alias: json["alias"].as_str()?.to_string(),
             increased: json["increased"]