This time around, a couple of gorilla-human hybrids...
Name: Gorilla Boss
History: Following his execution in the gas chamber, the brain of mobster George Dyke was transplanted by renegade scientist Doc Willard into the body of "the world's largest gorilla". Not wasting any time, Gorilla Boss and his henchmen embarked on a million dollar crime spree, culminating in the defeat and capture of Batman. Gorilla Boss then commanded Doc Willard to transplant his brain into Batman's body, a plan that foiled when Batman regained consciousness in the nick of time (of course). An enraged Gorilla Boss then escaped with Doc Willard in tow, but soon died in a fall.
Some years later, the Gorilla Boss' brain was expanded to the size of a planet and used as a power source by Sinestro, only to be destroyed by Superman.
Powers and Abilities: In addition to his sneaky mobster brain, George Dyke's gorilla form possessed incredible strength, dexterity, and (most likely) odor.
Not to be confused with:
History: While foiling a jewelry store robbery, Animal Man (then called "A-Man" for some reason) was grabbed from behind by a talking gorilla wearing a zoot suit. Mysteriously unable to absorb the beast's power (as he could with any other animal), Animal Man is captured by the groovy gorilla and his gang. While in captivity, Animal Man observed his laboratory surroundings and deduced the Mod Gorilla Boss wasn't actually a gorilla at all, but a human transformed by regular injections of a special serum. With this in mind, Animal Man escaped and began a marathon battle with Mod Gorilla Boss, causing the serum to wear off and return him to human form.
Powers and Abilities: A groovy fashion sense.