i choose you pikachu - Ash yells this when he picks Pikachu to fight, like it's the

Ash yells this when he picks Pikachu to fight, like it's the only option and everyone else is a disgrace.

Ash: 'I choose you Pikachu!' while pointing at the other Pokémon like they’re dead.

Ash yells it during a battle because he forgot to train the other Pokémon.

Ash says it when he’s tired and just wants to win without thinking.