diff --git a/data.yml b/data.yml
index 0405841..0e3b3aa 100644
--- a/data.yml
+++ b/data.yml
@@ -1082,4 +1082,124 @@ gliders:
       antigrav: -0.25
     traction: -0.25
     miniTurbo: 0.25
-    invuln: -0.25
\ No newline at end of file
+    invuln: -0.25
+rivals:
+  Mario:
+    - Peach
+    - Bowser
+  Luigi:
+    - Mario
+    - Daisy
+  Peach:
+    - Toad
+    - DonkeyKong
+  Daisy:
+    - Peach
+    - Waluigi
+  Yoshi:
+    - Toad
+    - DonkeyKong
+  Toad:
+    - KoopaTroopa
+    - Waluigi
+  KoopaTroopa:
+    - Yoshi
+    - Toad
+  ShyGuy:
+    - Yoshi
+  BabyMario:
+    - BowserJr
+    - BabyPeach
+  BabyLuigi:
+    - BabyMario
+    - BabyDaisy
+  BabyPeach:
+    - BabyMario
+    - BabyDaisy
+  BabyDaisy:
+    - BabyPeach
+    - BabyLuigi
+  Wario:
+    - Mario
+    - Daisy
+  Waluigi:
+    - Luigi
+    - Toadette
+  DonkeyKong:
+    - Bowser
+    - Wario
+  Bowser:
+    - Mario
+    - Luigi
+  Lemmy:
+    - Larry
+  Larry:
+    - Lemmy
+  Wendy:
+    - Peach
+    - Daisy
+  Ludwig:
+    - Iggy
+  InklingGirl:
+    - InklingBoy
+  VillagerBoy:
+    - Isabelle
+  Isabelle:
+    - VillagerGirl
+  Link: []
+  Rosalina:
+    - Toad
+  TanookiMario:
+    - CatPeach
+  CatPeach:
+    - TanookiMario
+  Birdo:
+    - Yoshi
+  Lakitu: []
+  Toadette:
+    - Yoshi
+    - Wario
+  KingBoo:
+    - PeteyPiranha
+  PeteyPiranha:
+    - KingBoo
+  BabyRosalina:
+    - Toadette
+  MetalMario:
+    - PinkGoldPeach
+  PinkGoldPeach:
+    - MetalMario
+  Wiggler:
+    - Yoshi
+    - ShyGuy
+  DryBones:
+    - KoopaTroopa
+    - DryBowser
+  BowserJr:
+    - Peach
+  DryBowser:
+    - DryBones
+  Kamek:
+    - BowserJr
+  Iggy:
+    - Ludwig
+  Roy:
+    - Morton
+  Morton:
+    - Roy
+  Peachette:
+    - Yoshi
+    - Wario
+  DiddyKong:
+    - DonkeyKong
+  FunkyKong:
+    - DonkeyKong
+  Pauline:
+    - DonkeyKong
+  LightMii: []
+  MediumMii: []
+  HeavyMii: []
+  InklingBoy:
+    - InklingGirl
+  VillagerGirl:
+    - VillagerBoy
diff --git a/index.css b/index.css
index 5ef8528..2689d13 100644
--- a/index.css
+++ b/index.css
@@ -26,6 +26,10 @@ menu {
   }
 }
 
+.info {
+  text-decoration: dotted underline;
+}
+
 :root {
   --meter-length: 0;
 }
@@ -77,6 +81,23 @@ menu:empty {
   margin: 0.25em 0;
 }
 
+#rivals {
+  margin-top: 0.5em;
+  min-height: 2.5em;
+}
+
+@media (min-width: 39em) {
+  #stats-display {
+    display: grid;
+    width: fit-content;
+    grid-template-columns: auto auto;
+  }
+
+  #rivals {
+    margin-left: 1em;
+  }
+}
+
 #output td {
   padding: 0 0.5em;
 }
diff --git a/src/index.civet b/src/index.civet
index dbbd32d..c65b344 100644
--- a/src/index.civet
+++ b/src/index.civet
@@ -160,6 +160,7 @@ kartPreview.appendChild document.createElement 'br'
 kartPreview.appendChild document.createElement 'br'
 
 statsDisplay := document.createElement 'div'
+    ||> .id = 'stats-display'
     ||> kartPreview.appendChild
 
 makeMeter := (id: string, value: number) =>
@@ -169,9 +170,30 @@ makeMeter := (id: string, value: number) =>
         ||> .style = `--meter-length: ${value * 100/6}%;`
         |> .outerHTML
 
+rivalsDiv := document.createElement 'div'
+    ||> .id = 'rivals'
+    ||> .append 'Rivals'
+
+rivalInfoString := 'When playing as P1 in a Grand Prix, these characters are guaranteed to be COM characters and should be better than other COMs, unless they are chosen by other players. Not all characters have rivals.'
+
+document.createElement 'sup'
+    ||> .textContent = '\ufe0f\u2139'
+    ||> .className = 'info'
+    ||> .title = rivalInfoString
+    ||> .addEventListener
+        'click'
+        -> alert rivalInfoString
+        { +passive }
+    ||> rivalsDiv.appendChild
+rivalsDiv.append ': '
+
+rivalImgContainer := document.createElement 'span'
+    ||> rivalsDiv.appendChild
+
 updatePreview := :void =>
     character := data.characters[characterDropdown.value]
-    characterImg.src = `./img/${Array::find.call(characterDropdown.options, .selected).textContent.replaceAll ' ', ''}.png`
+    characterName := Array::find.call(characterDropdown.options, .selected).textContent.replaceAll ' ', ''
+    characterImg.src = `./img/${characterName}.png`
     kart := data.karts[kartDropdown.value]
     kartImg.src = `./img/${Array::find.call(kartDropdown.options, .selected).textContent.replaceAll ' ', ''}.png`
     wheel := data.wheels[wheelDropdown.value]
@@ -196,6 +218,14 @@ updatePreview := :void =>
         <tr><td><label for="invuln-prev">Invulnerability</label></td><td>${makeMeter 'invuln-prev', statBlock.invuln}</td><td>${statBlock.invuln}</td></tr>
         </tbody></table>
         ```
+    statsDisplay.appendChild rivalsDiv
+    rivalImgContainer.innerHTML = ''
+    for rival of data.rivals[characterName]
+        document.createElement 'img'
+            ||> .alt = rival.replace rgx, ' $&'
+            ||> .src = `./img/${rival}.png`
+            ||> rivalImgContainer.appendChild
+
 updatePreview()
 
 [characterDropdown, kartDropdown, wheelDropdown, gliderDropdown].forEach .addEventListener 'change', updatePreview, { +passive }
diff --git a/src/yamlTypes.civet b/src/yamlTypes.civet
index 3626f36..028aba7 100644
--- a/src/yamlTypes.civet
+++ b/src/yamlTypes.civet
@@ -31,3 +31,4 @@ export interface YamlData
     karts: KartStatBlock[]
     wheels: WheelStatBlock[]
     gliders: GliderStatBlock[]
+    rivals: Partial<Record<string, string[]>>