Gohan is Goku's first son with Chi-Chi, who first appears at four-years-old He is then kidnapped by Goku's brother, Raditz, and locked up in a space pod. However, his temper flares and he bursts out of the space pod, dealing a blow to Raditz, but also knocking himself out. After the battle, Piccolo takes and trains him for a year as he realizes Gohan's potential. Gohan slowly becomes one of the strongest characters in the series,