Hey! Would it be okay if my character's powers were Nullification of other powers and mutations? Basically he cannot be influenced by any non physical powers, he can focus on someone or a group to nullify their powers and he can also focus to hinder their physical capabilities and different mutations. The last one requires more concentration and even though he can try to hinder the march of a Colossi, the effects will be barely noticeable and he would most likely faint or die within seconds out of overexertion.

Edit: It might be a good idea since then they can release the other more dangerous patients while having higher assurance of them staying in line. 

Also could he be patient 0? Not part of the 128 but an extra, a 0.