SOS Encounter: Blush Mountain
Walk: Blush Mountain (10%)
Its base catch rate is 120 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 Nest Ball or Friend Ball.
Evolution: Grubbin → Charjabug (Level 20) → Vikavolt.
Charjabug in every game · Pokémon Sun, Moon, Ultra Sun & Ultra Moon interactive map (Alola)