The Brass Monkey
The Brass Monkey is an Astro City crime boss who, as his name implies, is literally a brass monkey.
The Brass Monkey was formerly a janitor at Fox-Broome University, that used an experimental device there to transfer his mind into a brass monkey statue. He planned to use this metal body to commit crimes, but when his real body was killed, he found himself stuck in that form.
Made of solid brass through and through, the Brass Monkey possesses super-strength. He is strong enough to easily tear through Jack-in-the-Box's confetti. He also possesses all the agility one would expect of a monkey.