The Justice League has encountered numerous villains throughout the course of the animated series. DCAUResource.com has compiled a list of villains who have appeared on both Justice League and Justice League Unlimited. In the third season of JLU, Gorilla Grodd creates the Legion of Doom, a rather large "army" of supervillains, essentially protecting one another from the Justice League.
WARNING: Some profiles may contain spoilers for those fans that have not yet seen the newest episodes!
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