Dragonball Z: Fusion Guide

The following are the Three ways to Fuse.

Fusion Dance:

Basically just what the name suggests, a dance in which two
fighters perform a dance to fuse into one whole being. Goku learned this style
of fusion during the five years of inactivity between the end of the Cell Game
and before Gohan's start at Orange Star High School. The fusers must be similar
in size, build, and power level (The stronger fighter can simply just lower his
power level to match the fighter with the lower power level to meet this
requirement). Any mistakes in performing the dance can cause defective fusions.
This form of fusion only lasts for exactly 30 minutes, so after this time period
the two fighters de-fuse into their own two beings. It hasn't been successful to
break the fusion before or after the 30 minute time period.

Requirements/Conditions: - The two fighters must be similar in size, build, and
power - Must perform the dance correctly for a successful fusion - Fusion only
lasts for 30 minutes

Potarra Fusion:

The fusion technique of choice for Kaioshins, this technique is allegedly
hundreds of times better than that of the "Fusion Dance". The two fighters that
wish to fuse had to wear an earring, each having one in the opposite ear of the
other fighter. After this is done, they can fuse into one being (Which in
prospective causes the final being to have 2 earrings on). This fusion was meant
to be permanent, but unexpected conditions caused the break-up of the two
fusers.

Requirements/Conditions: - A set of earrings (one per fighter) - Both fighters
must wear their earrings on opposing ears - Each person can ONLY have one such
fusion in a lifetime - The effects of the fusion is permanent (supposedly)

Namekian Fusion:

The way of fusing by the Namekians. This is a way for 2 Namekians to fuse
into one being. No special objects or performances are needed for this type of
fusion. The fuser just has to place his hand on the person that he wishes to
fuse with (being that the person being fused allows the act), and they just
merge into one. There are no set time periods for this type of fusion, and the
two fighters can de-fuse at any point of time.

Requirements/Conditions: - The fuser's must be Namekians (makes some sense?) -
Both fusers must agree to fusing to each other - Size and Power level has no
effect on the fusing

Examples of Fusion are Gotenks, Gogeta, and Vegetto. Piccolo and Nail, plus
Piccolo and Kami