 When the Ultra-Humanite was able to mind-control all the heroes and villains on Earth, he was unable to control Wildcat.Wildcat's resistance was never explained, other than by Ultra-Humanite quoting Mark Twain who said that a cat can never be "made the slave of the lash".Whether this was another cat-like ability Wildcat gained from the magical spell, or there is another reason, was never explained or referred to again.