That would be Monsieur Mallah, who showed up on Teen Titans in its final season. He's the one who speaks French.

More prominently, there is Gorilla Grodd, who usually fights Flashes. But he's from a whole city of sentient apes called - what else - Gorilla City. His schemes were often big news, so Charlie, and most other mere mortals. know about the talking apes.

And there is, less famously. Detective Chimp. Who was just a really smart chimp for a long time till someone decided he'd more fun if he could talk. He used to wear the sort of hat Sherlock Holmes is often depicted wearing. Because he's a detective.