To correctly perform the Fusion Dance, the fusees must create a perfectly symmetrical image of one another. The Fusion Dance is a short series of poses that are performed by two characters of equal power levels and roughly equal size. In the series, the result of a correctly performed Fusion Dance is a superior being whose power is multiplied severalfold over that of the individual fusees. If one character performs the dance wrong, then it will result in an obese or a skinny character who is much weaker than either fusee individually.
If the timing of the poses is off, it results in a sickly-looking fusion who is also much weaker than each fusee individually. Regardless, the fused character possess mixed physical traits of their original counterparts. If they synchronize their dance correctly, it results with a very powerful being. Additionally, all end products of the Fusion Dance seem to acquire the same attire: white pants, a sash, and a vest with yellow or orange padding around the shoulders and neck.
Only one character in the manga has been seen as a result of the Fusion Dance; his name is Gotenks, being a fusion of the characters Goten and Trunks. Even though there was only one in the original series, one other fused characters appears in the movie Dragon Ball Z: Fusion Reborn, in Dragon Ball GT and in a what-if saga in the video game Dragon Ball Z: Budokai 2. In Fusion Reborn, Gogeta is born from Goku and Vegeta, however he was first given the name Veku upon being incorrectly fused. The second time, he is correctly made and given the name Gogeta. Gogeta appears as a Super Saiyan 4 in Dragon Ball GT, and is the most powerful character in the Dragon Ball universe. In Dragon Ball Z: Budokai 2, Tiencha is born from Tien Shinhan and Yamcha.
The total fusion time lasts about 30 minutes, depending on the amount of ki that is used. After that, it takes the character's bodies another hour before they are able to fuse again. The fusion can also end if the two fusees' power levels fall out of sync after the fusion is completed. In Dragon Ball Z: Wrath of the Dragon, it is revealed that if the fused characters sustain enough damage while under fusion, the fusion will end prematurely. Additionally, the more powerful the fused entity is, the shorter the fusion will last; for example, Super Saiyan 4 Gogeta only lasted 10-15 minutes.