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

Only in Ultra Sun & Ultra Moon
NPC Trade: Route 8

Arbok also appears in

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

You won't find Arbok in the wild in this game — you get it in an in-game trade or by evolving Ekans (Level 22).

For the look, the best colour match is Heal Ball, Master Ball or Dream Ball.

Evolution: Ekans → Arbok (Level 22).

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