Gogeta

Gogeta (ゴジータ, Gojīta) is the resulting fusion of Goku and Vegeta, when they perform the Fusion Dance properly.

Veku
Veku (ベクウ Bekū) is the failed version of Gogeta who appears when Goku and Vegeta attempt to fuse in Dragon Ball Z: Fusion Reborn against Janemba. King Kai blames Vegeta for the mistake, claiming that Vegeta has failed to extend his index finger, resulting in an embarrassingly weak fusion which forms a fat fighter called "Veku" by South Kai; a name that comes from Vegeta and Goku. In this form, speed is decreased, and ki is extremely limited.

Veku does not perform any special ki attacks due to his severe ki limitation. Also, because of his fat body, he does not retaliate by punching and kicking. Instead, all he does against Super Janemba is pass gas and escape using what he calls his Rabbit Feet Technique. Like most fusions, there is a 30-minute time limit before the two fighters defuse.

Concept arts for a skinny Veku are shown in Daizenshuu 6, in the Fusion Reborn area, but the character was not included in the final version of the movie. A skinny Veku card exists in Dragon Ball Carddass. Skinny Veku is also in Dragon Ball Z: Buu's Fury, appearing when the player fails to do a proper fusion.

Veku makes a short appearance in Dragon Ball Super: Broly when Goku and Vegeta fail to perform the Fusion Dance properly the first time due to Goku's finger slipping below Vegeta's and the second time due to Goku being tilted at a 45-degree angle while Vegeta is tilted at a 60-degree angle.