Vegito

Vegito (ベジット, Bejitto; "Vegetto") is the immensely powerful result of the fusion between Goku and Vegeta by the use of the Potara Earrings in an effort to defeat super buu. His voice is a dual voice that contains both Goku's and Vegeta's voices. Vegito is regarded most for his immense power and speed, and is often widely considered as the most powerful character in the whole of Dragon Ball, Dragon Ball Z, and Dragon Ball manga. His Fusion Dance counterpart is Gogeta.