Piccolo

Piccolo is Goku's former enemy and current ally. In the TFS universe, he has a sarcastic disposition and is often easily irritated by Goku's stupidity (similar to how Vegeta feels around Nappa). He was also Gohan's mentor between the death of Raditz and before Vegeta and Nappa arrived, had a thing for calling him a "nerd", and repeatedly attacked him right after telling him to dodge, which traumatizes the child to the point of paralysis whenever the word is shouted out. He actually protested against being brought to Namek via wish from Porunga, since he obviously did not want to die again right after being revived, but once he was on Namek, he realized how much at home he felt because of how boring the planet was, just like his training on Earth's wastelands.