Talk:Homeless Guy (2012 TV series)/@comment-25652270-20170620164054

Donnie said tha it takes weeks to make retromutagen, but that's just for standard mutagen and in Owari, the retromutagen didn't work on Super Shredder. So it would have to be a new kind of retromutagen in order for it to work and Donnie had been working on the normal retromutagen for a long time, I can only imagine how long the special retromutagen will take