Fusion/Merging Goku + Vegeta = Gogeta Vegeta + Goku  = Vegeta Goten + Trunks = Gotenks Piccolo + Krillen = Pillen Dende + Goku = Denku Mr. Satan + Goku = Mr. Saku Piccolo + Kame = Kamicolo Nail + Piccolo = Nailcolo                                                                    Absorbing Buu + Gotenks = Super Buu Buu + Great Kaioh = Fat Buu Artificial 17 + Android 17 = Super 17 Kibito + Shin = Kaioshin Cell + #17 = Cell's second form Cell + #18 = Cell's third form

This is not quite a fusion but when you think about it is a type of fusion. To explain it: Fusion means, a merging of diverse, distinct, or separate elements into a unified whole. In other words two different objects that come together are fused.                                                                      Control Bibidi----Buu Babidi----Buu Babidi----Majin Bebi------Goten Bebi------Gohan