Goku-Vegeta: Goku and Vegeta use special ear rings that were given to Goku by the old Supreme Kia to transform into Vegito.
The ear rings are made to fuse anybody under any circumstances. They were also made to fuse whoever for enternity, but
goku and vegeta break the fusion when they enter Buu's stomach. They can turn any level of Super Saiyan.
Goku-Vegeta: Goku and
Vegeta use the fusion dance to transform into Gogeta. Gogeta can turn any level of Super Saiyan,
but the higher the level of Super Saiyan The less time they can be fused. After they have unfused they have to wait
an hour to refuse unless using the special ear rings.
Goten-Trunks: Goten and Trunks use the fusion dance to transform into Gotenks. This
is the only form in which Goten or Trunks can go SSJ 3. Like Gogeta they can only stay in fusion form for a short while
and then have to wait an hour before fusing again.
Piccolo-Kami: Piccolo and Kami do a Namekian fusion by placing one hand on the others chest and then getting sucked into
the others body. By having this transformation Piccolo and Kami become The Namek
which doubles their power level.
