Not much is currently known about the history of the Wild Villains. What is known is that they were seemingly founded by the Curator, a Villain who wished to dominate humanity. To that end, he brainwashed Zookeeper, forcing her to become his companion. Bearhead's reasons for joining are also unknown, though it has been noted that he is on good terms with Curator.
- All three members of Wild Villains resemble characters from Kohei Horikoshi's previous work, Oumagadoki Zoo.