Have Tom Hardy as a guest appearance. Don't laugh at me the guy is great. Plus, he'd probably do it if he can fit it into his schedule. He is in high demand right now. But, he is laid back and can play peculiar. Plus, it would be epic entertainment to see Jim Parsons and Tom Hardy on screen together. What's more, is there's so many ways you can write this into the show. After all, Hardy has done Bane and Star Trek Nemesis.