Look at this cute green baby Beast with his toy. Probably in this period of his life, he was less lazy, than after. But did you know that he wasn't born green? He was bitten by a rare green monkey and got infected with a deadly disease known as Green Fever. Garfield's parents-scientists made for him a serum that saved his life. But it has side effects that turn him green and allow him to morph into any animal. Teen Titans Go Baby Beast Boy Sticker.