Using these techniques, Gotenks could overpower Super Buu in his base form. Sadly, his foolishness did him in, as his choice to not take the fight seriously led to him being absorbed. Janemba is ...

After the fat Buu expelled evil from himself, it coalesced into a skinny Buu that went onto to absorb the other, forming "Super" Buu ... Goten and Trunks (as Gotenks), Gohan and countless others ...