Story

Uub is a ten-year-old boy who lives on an island far to the south, but his true identity may surprise you—he's actually the reincarnation of the terrifying Majin Buu!
There's no need to panic though, as being reborn as a human purified the soul of the pint-sized pink peril.

(Tale 518)

The oldest of 5 siblings, Uub has a hard-working personality and takes good care of his younger brothers and sisters.
He enters the 28th Tenkaichi Budokai for the sole purpose of using the prize money to buy food for his impoverished family.

(Tale 519)

Seeing this, Goku throws some uncharacteristic smack talk to get Uub to unleash his true power, which the boy does in explosive fashion!
A powered up Uub is able to hold his own against the experienced Saiyan warrior and even manages to send Goku flying!

First Appearance

"Dragon Ball" Tale 518

28th Tournament: Left midway during the first round.

Trivia

He made a vow to fight Goku again!

Uub promised to have a rematch with Goku once he had trained and fully developed his strength.
This was actually Goku's reason for training Uub in the first place, as he craved to face off against someone stronger than himself.

(Tale 519)

The Dragon Ball Complete Edition contains an additional scene showing Uub flying on Kintoun after he makes his promise to Goku.
Being able to ride on the cloud makes it clear that this young fighter possesses a pure heart in addition to his unbelievable power.

(Tale 519)

→Preview: Next week's character rocks a haircut identical to Uub's!
*All comics images are from the Japanese version.