Goku hasn't been successful in every fight, and these are some battles he has lost to different characters who had an edge over him.

There are several fights throughout Dragon Ball Goku should and would have lost if he weren’t the main character.

Goku Z-End is entering the fight, but he's rarely finishing it in this base form. Even his Ultimate Attack in Sparking! Zero, a classic Spirit Bomb, sees him go Super Saiyan for the closing shot. 17.