Beast boy was born with a rare illness called Sakutia and was cured by a serum from a green monkey and it turned his skin and hair green and gave him the ability to shape into any animal he wanted to.

Identity: Garfield Mark Logan

Powers: Agility, Animal attributes, Animal oriented powers, Durability, Empathy, Flight, Natural armor, Natural weapons, Shapeshifting, Size changing, Sub-mariner, Super speed, Super strength, and Wallcrawling

First appearance: Doom Patrol #99 (November, 1965)

Overall power score:6