Flip Bakugan is a kind of Special Treatment Bakugan, all Bakugan in this series have their colors "flipped", for example, Haos Bakugan would normally be grey with gold trim, in Flip treatment, they are gold with white trim. They don't have any effect in battle except being counted as Special Treatment Bakugan. Another name for Flip is Reverse. There are also Flip Battle Gear similar to the regular Flip Bakugan.