It's a bit too short to really judge, but there are a few points I'd like to raise.
First mixing universes well gets more difficult the more universes ypu add so I'd suggest dropping either Marvel or DC given that they have a complex conflicting lore. Also are you basing the fic in DB? why was Gohan reincarnated as Balder without actually dying and being reborn?
the story is also a bit confusing in the sequence of events(Cell says damn you after vanishing for example), but the main problem is show, don't tell. that is to say that you tell us that a lot of things happen in a short interval of time, but there are no descriptions and few explanation about what is happening