Gogetenks is the result of the Fusion Dance Technique performed between Gogeta and Gotenks, both transformed into Super Saiyan's to create an even greater Fusion out of desperation in order to battle against the all powerful Kashvar, Ark in Dragon Ball SF.
Dragon Ball SF
Ark Through Ultimate Ark Saga
After the failure of the Potara Fusion of Gogehan, Gohan is knocked out, leaving only Goku and Vegeta as Vegito to face Super Ark alone. After Vegito is split back into Goku and Vegeta, they decide to use the Fusion Technique after Trunks and Goten decide to use the Fusion Technique to create Gotenks. After ungoing the Fusion into Gogeta and transform into a Super Saiyan, Gogeta decides to try and fuse with Super Saiyan Gotenks. They are successful in creating the Super Fusion, Gogetenks. However after Ark reverts back to his original form, Ultimate Ark, they are once again easily overpowered.
Transformation and Power Up
Gogetenks is able to transform into a Super Saiyan, which greatly increases him power and strength far beyond his normal form. It is assumed that Gogetenks can also do higher transformations. However they are nver seen due to the Fusion becoming greatly overpowered, causing the Fusion to end before they could manage to defeat Ark.
Techniques and Special Abilities
Flight: the ability to fly with the use of Ki.
Ki Blast: the most basic form of energy waves.
Instant Transmission: One of Goku's signature techniques that enables Gogetenks to move faster than the speed of light.
Final Buster Kamehameha: The combination of Vegeta's Final Flash, Trunks' Buster Cannon and Goku and Goten's Super Kamehameha Wave. His stance to releasing the very large Energy Ball is similar to Vegeta's Big Bang Attack. the large bluish colored Energy Ball is covered with golden colored electricity.
Japanese Dub: Masako Nozawa (Goku and Goten), Ryo Horikawa & Takeshi Kusao
FUNimation Dub: Sean Schemmel, Christopher Sabat, Eric Vale & Robert McCollum