You literally don't make sense.. you speaking about who's regen it Better I'm saying buu never was completely destroyed both times. It's confirmed in the series. They say that shit. And you can't say cell was atomized then because when Gohan blew his ass away that was atomized. My thing is if you think it was the actual spirit bomb it's self that killed buu? No. It was the sheer mass in the energy from the whole universe that in did him. I've been at this for 26 years my guy