Espeon. This psychic cat has been a favorite of mine since I picked up Pokemon, mainly because my first exposure to the series was through the GameCube as a little boy. Every time I play Colosseum, I keep Espeon on my team. And I've used it in plenty of other games, too.

a pink cartoon character with blue ears and a red spot on its head

ALT: a pink cartoon character with blue ears and a red spot on its head

Yes, that’s such a wonderful choice! Espeon is great, such a cool and sleek Psychic-type in general. It is great how it’s still so fondly remembered from Colosseum—that one was so good haha.