diff --git a/public/audio/cry/718-10-complete.m4a b/public/audio/cry/718-10-complete.m4a
new file mode 100644
index 00000000000..94d95360553
Binary files /dev/null and b/public/audio/cry/718-10-complete.m4a differ
diff --git a/src/battle-scene.ts b/src/battle-scene.ts
index a586b565e13..897deaad6d7 100644
--- a/src/battle-scene.ts
+++ b/src/battle-scene.ts
@@ -1389,7 +1389,7 @@ export default class BattleScene extends SceneBase {
     case Species.GRENINJA:
       return Utils.randSeedInt(2);
     case Species.ZYGARDE:
-      return Utils.randSeedInt(3);
+      return Utils.randSeedInt(4);
     case Species.MINIOR:
       return Utils.randSeedInt(6);
     case Species.ALCREMIE:
diff --git a/src/data/ability.ts b/src/data/ability.ts
index 43d02da1733..0d1da2ed421 100644
--- a/src/data/ability.ts
+++ b/src/data/ability.ts
@@ -5517,16 +5517,18 @@ export function initAbilities() {
       .attr(UnsuppressableAbilityAbAttr)
       .attr(NoFusionAbilityAbAttr)
       .bypassFaint(),
-    new Ability(Abilities.POWER_CONSTRUCT, 7) // TODO: 10% Power Construct Zygarde isn't accounted for yet. If changed, update Zygarde's getSpeciesFormIndex entry accordingly
-      .attr(PostBattleInitFormChangeAbAttr, () => 2)
-      .attr(PostSummonFormChangeAbAttr, p => p.getHpRatio() <= 0.5 || p.getFormKey() === "complete" ? 4 : 2)
-      .attr(PostTurnFormChangeAbAttr, p => p.getHpRatio() <= 0.5 || p.getFormKey() === "complete" ? 4 : 2)
+    new Ability(Abilities.POWER_CONSTRUCT, 7)
+      .conditionalAttr(pokemon => pokemon.formIndex === 2 || pokemon.formIndex === 4, PostBattleInitFormChangeAbAttr, () => 2)
+      .conditionalAttr(pokemon => pokemon.formIndex === 3 || pokemon.formIndex === 5, PostBattleInitFormChangeAbAttr, () => 3)
+      .conditionalAttr(pokemon => pokemon.formIndex === 2 || pokemon.formIndex === 4, PostSummonFormChangeAbAttr, p => p.getHpRatio() <= 0.5 || p.getFormKey() === "complete" ? 4 : 2)
+      .conditionalAttr(pokemon => pokemon.formIndex === 2 || pokemon.formIndex === 4, PostTurnFormChangeAbAttr, p => p.getHpRatio() <= 0.5 || p.getFormKey() === "complete" ? 4 : 2)
+      .conditionalAttr(pokemon => pokemon.formIndex === 3 || pokemon.formIndex === 5, PostSummonFormChangeAbAttr, p => p.getHpRatio() <= 0.5 || p.getFormKey() === "10-complete" ? 5 : 3)
+      .conditionalAttr(pokemon => pokemon.formIndex === 3 || pokemon.formIndex === 5, PostTurnFormChangeAbAttr, p => p.getHpRatio() <= 0.5 || p.getFormKey() === "10-complete" ? 5 : 3)
       .attr(UncopiableAbilityAbAttr)
       .attr(UnswappableAbilityAbAttr)
       .attr(UnsuppressableAbilityAbAttr)
       .attr(NoFusionAbilityAbAttr)
-      .bypassFaint()
-      .partial(),
+      .bypassFaint(),
     new Ability(Abilities.CORROSION, 7) // TODO: Test Corrosion against Magic Bounce once it is implemented
       .attr(IgnoreTypeStatusEffectImmunityAbAttr, [ StatusEffect.POISON, StatusEffect.TOXIC ], [ Type.STEEL, Type.POISON ])
       .partial(),
diff --git a/src/data/pokemon-forms.ts b/src/data/pokemon-forms.ts
index 03b6b89e5b1..7cc20d50fb9 100644
--- a/src/data/pokemon-forms.ts
+++ b/src/data/pokemon-forms.ts
@@ -799,8 +799,8 @@ export const pokemonFormChanges: PokemonFormChanges = {
   [Species.ZYGARDE]: [
     new SpeciesFormChange(Species.ZYGARDE, "50-pc", "complete", new SpeciesFormChangeManualTrigger(), true),
     new SpeciesFormChange(Species.ZYGARDE, "complete", "50-pc", new SpeciesFormChangeManualTrigger(), true),
-    new SpeciesFormChange(Species.ZYGARDE, "10-pc", "complete", new SpeciesFormChangeManualTrigger(), true),
-    new SpeciesFormChange(Species.ZYGARDE, "complete", "10-pc", new SpeciesFormChangeManualTrigger(), true)
+    new SpeciesFormChange(Species.ZYGARDE, "10-pc", "10-complete", new SpeciesFormChangeManualTrigger(), true),
+    new SpeciesFormChange(Species.ZYGARDE, "10-complete", "10-pc", new SpeciesFormChangeManualTrigger(), true)
   ],
   [Species.DIANCIE]: [
     new SpeciesFormChange(Species.DIANCIE, "", SpeciesFormKey.MEGA, new SpeciesFormChangeItemTrigger(FormChangeItem.DIANCITE))
diff --git a/src/data/pokemon-species.ts b/src/data/pokemon-species.ts
index 1ceb5971f6a..8666e394352 100644
--- a/src/data/pokemon-species.ts
+++ b/src/data/pokemon-species.ts
@@ -425,6 +425,7 @@ export abstract class PokemonSpeciesForm {
       case "hero":
       case "roaming":
       case "complete":
+      case "10-complete":
       case "10":
       case "10-pc":
       case "super":
@@ -2135,7 +2136,8 @@ export function initSpecies() {
       new PokemonForm("10% Forme", "10", Type.DRAGON, Type.GROUND, 1.2, 33.5, Abilities.AURA_BREAK, Abilities.NONE, Abilities.NONE, 486, 54, 100, 71, 61, 85, 115, 3, 0, 300, false, null, true),
       new PokemonForm("50% Forme Power Construct", "50-pc", Type.DRAGON, Type.GROUND, 5, 305, Abilities.POWER_CONSTRUCT, Abilities.NONE, Abilities.NONE, 600, 108, 100, 121, 81, 95, 95, 3, 0, 300, false, "", true),
       new PokemonForm("10% Forme Power Construct", "10-pc", Type.DRAGON, Type.GROUND, 1.2, 33.5, Abilities.POWER_CONSTRUCT, Abilities.NONE, Abilities.NONE, 486, 54, 100, 71, 61, 85, 115, 3, 0, 300, false, "10", true),
-      new PokemonForm("Complete Forme", "complete", Type.DRAGON, Type.GROUND, 4.5, 610, Abilities.POWER_CONSTRUCT, Abilities.NONE, Abilities.NONE, 708, 216, 100, 121, 91, 95, 85, 3, 0, 300),
+      new PokemonForm("Complete Forme (50% PC)", "complete", Type.DRAGON, Type.GROUND, 4.5, 610, Abilities.POWER_CONSTRUCT, Abilities.NONE, Abilities.NONE, 708, 216, 100, 121, 91, 95, 85, 3, 0, 300),
+      new PokemonForm("Complete Forme (10% PC)", "10-complete", Type.DRAGON, Type.GROUND, 4.5, 610, Abilities.POWER_CONSTRUCT, Abilities.NONE, Abilities.NONE, 708, 216, 100, 121, 91, 95, 85, 3, 0, 300, false, "complete"),
     ),
     new PokemonSpecies(Species.DIANCIE, 6, false, false, true, "Jewel Pokémon", Type.ROCK, Type.FAIRY, 0.7, 8.8, Abilities.CLEAR_BODY, Abilities.NONE, Abilities.NONE, 600, 50, 100, 150, 100, 150, 50, 3, 50, 300, GrowthRate.SLOW, null, false, true,
       new PokemonForm("Normal", "", Type.ROCK, Type.FAIRY, 0.7, 8.8, Abilities.CLEAR_BODY, Abilities.NONE, Abilities.NONE, 600, 50, 100, 150, 100, 150, 50, 3, 50, 300, false, null, true),