Gotenks wears a blue and yellow colored Metamoran vest, one which all Fused characters wear. Around his waist is a turquoise sash, and he wears white silky pants, dark shoes, and black wrist bands. His hair style is a mixture ofthe hair of both Trunks and Goten, with the front and back of his head. His hair is black like those of Goten's, and the sides being the purple/white color that Trunks's hair is, and the style of it is similar overall to Goten's while in Super Saiyan form although his hair has a widow's peak it is only purple in his base form. His body is also very toned and muscular, especially for someone his age. Gotenks' personality is unique even though he shares personality traits of his creators, Goten and Trunks. Gotenks is known to be cocky, arrogant and mischievous like Trunks, yet he acts playful and whines like Goten. Like the genetic composition of Goten and Trunks, Gotenks is a Saiyan/Human hybrid.
Interestingly Gotenks has a widows' peak something neither Goten or Trunks have, although its possible that Trunks has a widow's peak that is hidden by his bangs and Goten does have a widow's peak in Dragon Ball GT. He also greatly resembles Vegeta in terms of his hairstyle, facial expressions and his obnoxious arrogant attitude