nobody knows! But many suspect genetic engineering and rigorous training regiments.
tags: Harsh Boogie, OK K.O.! Let's Be Heroes!,
from: https://discount-supervillain.tumblr.com/post/164708757007
tags: Harsh Boogie, OK K.O.! Let's Be Heroes!,
from: https://discount-supervillain.tumblr.com/post/164708757007