|Debut||Dragon Ball Z: Bojack Unbound|
Udo is a large fighter with a blond hair and a blond mustache. He wears reddish-black tights and combat boots. He also has a very muscular build, being very tall and in possession of a massively well defined physique. Udo resembles someone of American descent, even wearing western clothes in his profile photo. His appearance mainly counters that of Gohan; while Gohan is small, pale, and of eastern descent, Udo is giant, burly, mustachioed and of western descent.
Udo participates in the Intergalactic Tournament. He proves to be a great fighter by Earth's standards, having made it to the one-on-one preliminaries despite the many combatants. He faces off against Gohan during the preliminaries on the high platforms over the ocean. Udo seems a little proud of his luck, yet conflicted about his circumstances of fighting a small kid. He tells Gohan that he will not be going easy on him, referring to him as a "baby". He is both surprised and respectful with Gohan's answer, telling him he has a lot of guts, before their match begins. He put up little struggle against the young Saiyan in his base form, but loses in the end.