Fusion
The Fusion Technique
Fusion is a unique technique. It occures when two bodies join into one body. If the fusion is a success, the new person will have the skills of the two that joined. Which will not only improve their skill, but also their power. Here are the three differnt ways to fuse...

Fusion Dance
In order to fuse, the two people have to perform a special dance. But the two have to have mirror like movements, they both have to have the exact pose as eachother or they wouldn't get a successful fusion. Also the two people fusing must be close to the same height, weight, and powerlevel. If they do the dance incorrectly the result will be a defective fusion. If the fusion is successful the new person will have the appearance of both people, with new clothes. This fusion only last for a half an hour, then the two defuse. After they defuse the two people must have atleast one hour to rest.
Who Completed This:
Goku & Vegeta = Gogeta
Goten & Trunks = Gotenks

Potara Earrings
This fusion requires a pair of magical earrings called, Potara Earrings. Two people must put the one earring on the oppisite ear, and the earrings automatically fuse the two people together. This fusion is permenant.
Who Completed This:
Vegeta & Goku = Veggeto

Namek Fusion
This technique is unique only to the Nameks (i.e Piccolo, Nail, Kami). The two Nameks touch each other, contentrate, and fuse together permanently. Sometimes the Namek will become a Super Namek. Also the Namek will look like one of the original Nameks.
Who Completed This:
Piccolo & Nail = Piccolo
Piccolo & Kami = Piccolo