Koopaleons are chameleon-like Koopa enemies that first appeared in Super Mario 3DS World.
It is a red-shelled Koopa with green skin. It can stick its tounge out which is blue. It can turn invisible using its purple hair tuft.
Super Mario 3DS World
Koopaleons first appear in this game. They use their tounge to try to swing and land on Mario while turning invisible with its purple tuft.