Where to find Rotom in Sun, Moon, Ultra Sun & Ultra Moon

Only in Ultra Sun & Ultra Moon
Island Scan: Poni Gauntlet (100%)

Rotom also appears in

How to get Rotom in Sun, Moon, Ultra Sun & Ultra Moon

Its base catch rate is 45 out of 255 (higher is easier); the catch rate calculator works out your odds with each ball. For the look, the best colour match is Quick Ball or Fast Ball.

Rotom in every game · Pokémon Sun, Moon, Ultra Sun & Ultra Moon interactive map (Alola)