73highest level
Beating them gives you Crown Cap, Exp. Charm and Oval Charm.
This is around Postgame in the story — that page lists everything you can have caught by this point.
Types on this team: Ghost ×2FlyingIcePsychic
| Pokémon | Moves | |
|---|---|---|
 | Crystal King Lv 71 · Snow Cloak · Focus Sash Quiet nature · 31 IVs · EVs 4 HP / 252 Def / 252 SpD | Trick Room Shadow Ball Protect Blizzard |
 | Twirler Lv 72 · Cursed Body · Sitrus Berry Careful nature · 31 IVs · EVs 126 HP / 126 Atk / 126 Def / 126 SpA / 4 SpD | Phantom Force Hammer Arm Earthquake Will-O-Wisp |
 | Magikoopa Lv 73 · Magic Guard · Life Orb Modest nature · 31 IVs · EVs 4 HP / 252 Spe / 252 SpA | Eerie Spell Ice Beam Thunderbolt Tailwind |