Gogeta is the Metamoran fusion of Goku and Vegeta when they perform the Fusion Dance properly. His voice is a dual voice containing both Goku’s and Vegeta’s voices. Like his Potara counterpart; Vegito, he is regarded as one of the most powerful characters in the entire Dragon Ball franchise, combining the power of Goku and Vegeta and even magnifying them to become even more powerful.
Gogeta first debuted in Fusion Reborn as the final protagonist when Goku and Vegeta fused in Hell to defeat Super Janemba. He returned in GT as a Super Saiyan 4 to battle Omega Shenron, but defused quicker than expected due to over-using too much power. He would then make his canon debut in Broly as the final protagonist, similar to his role from Fusion Reborn.