I was big on comic books in the 90's, but I've never read a single Flash comic. What's funny is, I like the Flash as a standalone character, but by far he seems to have some of the wackest villains of any major comicbook character.
I never even knew who Gorilla Grodd was until the Injustice games.
I just can't fathom a telepathic gorilla being a formidable enemy for someone who can run damn near at the speed of light.
Grodd.
Imagine never seeing or reading The Silence of the Lambs, but hearing all these people describe Hannibal Lecter.
Now, take what you imagined, and put it in a super strong super intelligent gorilla's body.;
Give that gorilla Professor X's powers.
Grodd.
Oh, and while I'm here, read this:
Then keep reading every trade in order until Barry shows up and takes over