Before receiving his Turtle School Uniform, Krillin wore the Orin Temple Gi, the martial arts uniform of the Orin Temple. During the Dragon Ball Z series, the symbol on Goku's Gi was changed to King Kai's symbol, the Son family's ' Go' symbol, and later disappeared until Dragon Ball Super. Goku wears this Gi in every major battle he fights in. This Gi is orange and blue and has the Turtle School symbol on it. Goku, Krillin and Yamcha wear the Turtle School uniform, which bears a resemblance to taekwondo dobok.
Gohan wears a Gi that is the same as his father's