"Nothing I say in character is meant serious; it's all a game, and if you don't like it, leave."
— Nyx Sparkle, Bronyism
I honestly have no idea how anyone will know when a pro wrestling gimmick is going to work. The Undertaker has been a zombie controlled by a fat man and a magical urn for two decades. They've had sorcerers, chicken men, every version of the mentally handicapped and RoboCop. So when you're a pro wrestling writer coming up with a last-minute replacement, an overweight space barbarian who can control electricity (maybe?) is an absolutely reasonable thing to suggest.