90level cap
Beating them gives you the ability Heat Erosion.
Fought at Boss group — Treasures of Ruin.
Types on this team: Dark ×3Fire ×3
| Pokémon | Moves | |
|---|---|---|
 | Chi-Yu Lv 90 · Beads of Ruin / Heat Erosion Phase 1 of 3 — uses these moves in this order, then repeats. Level 90 at the start of a run, one higher for every boss you have already beaten this run (99 after nine). Innates switch on as your boss count grows: Heat Erosion (Fire hits Ground and Rock super effective.) — from your 2nd boss win; Flash Fire (Powers up if hit by fire.) — from your 4th; Blaze (Ups Fire moves in a pinch.) — from your 6th. Beating it grants the ability Heat Erosion (Fire hits Ground and Rock super effective.). | Nasty Plot Incinerate Burning Jealousy Flamethrower Overheat |
| Chi-Yu Lv 90 · Beads of Ruin / Heat Erosion Phase 2 of 3 — uses these moves in this order, then repeats. Its HP is fully restored when this phase begins. | Ruination Flamethrower Dark Pulse |
| Chi-Yu Lv 90 · Beads of Ruin / Heat Erosion Phase 3 of 3 — uses these moves in this order, then repeats. Its HP is fully restored when this phase begins. | Nasty Plot Flamethrower Overheat |