| Summer Academy's Onix|
Summer School's Iwaaku
|Trainer:||Pokémon Summer Academy|
|Debut:||One Team, Two Team, Red Team, Blue Team!|
|Current location:||At the Summer Academy|
Onix was used in the first part of Summer Academy triathlon by Brock. After Brock arrived at the second part of the triathlon, Brock recalled Onix and returned it to the Summer Academy.
None of Onix's moves are known.