Board Thread:M.U.G.E.N Discussion/@comment-26371868-20151216084015/@comment-10227639-20151216140612

While the crashing part is possible (well, Chuck Norris did it), the latter part not possible (if by 'leave' you mean actually create files). You can however make the character show up 'scary' photos on MUGEN before 'crashing'.

I personally would hate the character but eeh, some people like jumpscares. I'll not complain.