So I've been reading a lot how Dr. Manhattan is basically indestructible but then I thought, what if Goku gathered all the dragon balls and wished that Dr. Manhattan never existed? That means technically Goku can defeat Dr. Manhattan pretty easily, wouldn't it?
That could be possible but Doctor Manhattan can see his own past, present (duh) and future so the moment he sees someone is trying to wish him away he could teleport there and prevent it. :D
Nintendo is selling their IPs to Microsoft and this is true because: