Grodd

Grodd is a talking gorilla who is a strong enemy of The Flash and Kid Flash, and often is seen rolling barrels to crush his enemies. Grodd can also telepathically control the minds of animals and some humans.

Origins
When an alien spacecraft that was hit by a radioactive meteor crashes in Grodd and his brother Solovar's African home in the jungle, the gorillas develop super-intelligence from the radioactive blast. Grodd decides to help Solovar turn the jungle into Gorilla Island and then leave to take over North America.

Death
When Grodd creates the plan to control every animal in Central City's mind, Grodd hopes the animals will help him wipe out the human race. Instead, some animals that love thier owners so much, rebel against Grodd and help The Flash defeat Grodd for good.