One villain who made their presence known in season one of The Flash was Grodd, the super-intelligent gorilla with psychic abilities. However, that wasn't the last we saw of him. According to The Wrap, Danielle Panabaker, who playsDr. Caitlin Snow, revealed that Grodd has some unfinished business and Caitlin will be the Fay Wray to Grodd's Kong, as she puts it.

During season one, Grodd was a test subject at STAR Labs at one point and he made a bond with Caitlin. Then, the particle accelerator exploded and gave Grodd the psychic powers everyone is familiar with. Because of that early bond, Caitlin will play a bigger role in his reappearance.

According to the descriptions released for upcoming episodes, it doesn't look like Grodd will appear in the upcoming weeks, as Barry and company will be dealing with Firestorm, Dr Light, and Zoom, but we'll keep you updated as more information surfaces.