Goku

Resistance Saga
After Garlic Jr. kidnapped Gohan and used the Dragon Balls Goku had no choice but to team up with Piccolo to try and stop the immortal monster. But it wasn't until his mother and brother showed up that they managed to defeat the monster. After learning about his origin Goku offers to let them use the Dragon Balls to bring his father and his team here to help prepare them for the battle with Frieza. When the time comes to gather the Dragon Balls again Goku decides to let Gohan and Krillin go and collect them believing that their isn't anyone else that will get in their way.