Leonidas is a Bakugan from the 2009 video game. He is a mysterious creature formed from the dark thoughts of deceased Bakugan in the Doom Dimension. He is the partner Bakugan of Dino Clopman.
- In the game, he can be any attribute. But in Dino Clopman's Adventures, he is a Pyrus Bakugan.
- He is the only Bakugan owned by the DinoAdventure Squad who can talk.