On Neatorama there was a post about Superman's Kryptonian chimp, Beppo, who I would think would be a horrifying menace to the general population.
Actually- according to their post,
"Because it’s from Krypton, Beppo the monkey had super powers … that it used for mischief! Superboy had to lead the super monkey into deep space and left him there."
Man, that's pretty messed up! What's even more messed up is that once in deep space, Beppo found Curious George in Space... and showed him that despite the vast reaches of the universe, there's only room for one Space Monkey.
I took a few minutes to re-create the grisly encounter as accurately as I could:
Anyway, this cover is so great & shows exactly what a pain-in-the-ass a Super-powered monkey would be...
DC Comics' store actually has a plush version of this super-powered primate.
The doll's cuteness betrays the actual horror Beppo has the potential to release upon mankind.