Colossus (コロッサス, Korossasu?) is a quadrupedal reptile-like Bakugan that debuts in Bakugan: Evolutions. It is the Partner Bakugan of James Short.
Colossus Strength Mode (コロッサス ストレングモード, Korossasu Sutorengu Mōdo?)
is the first Elemental Evolved Form of Colossus in Bakugan: Evolutions
. It is represented in the Physical Game as Platinum Colossus
Colossus Speed Mode (コロッサス スピードモード, Korossasu Supīdo Mōdo?)
is the second Elemental Evolved Form of Colossus in Bakugan: Evolutions
. It is represented in the Physical Game as a colored variant of Platinum Colossus
during the Ball form roll out sequence.
Due to not having a character card, Aquos Platinum Colossus is invalid to use in Toy Battling Game or Trading Card Game. It is one of only two Bakugan that are invalid, the other being Haos Ferascal Ultra.