Grandpa Gohan found baby Goku and raised him, teaching basic self-defense. He laid the foundation for Goku's martial arts journey, ensuring the young Saiyan could survive.
After his battle with Frieza, the Yardrats nursed Goku back to health. They taught him Instant Transmission, a powerful spiritual energy technique for instant teleportation.
Master Roshi transformed Goku's raw talent into true fighting discipline. He rigorously trained Goku for tournaments, enhancing his stamina, technique, and teaching him the iconic Kamehameha.
Kami provided intense training on the Lookout before the 23rd Tenkaichi Budokai. Goku wore weighted clothing and sparred Mr. Popo, building incredible strength.
King Kai trained Goku in the afterlife, preparing him for the Saiyan invasion. He taught Goku the power-multiplying Kaio-ken and the devastating Spirit Bomb.
Whis, an angelic attendant, taught Goku the fundamentals of Ultra Instinct. This training, ahead of the Tournament of Power, pushed Goku beyond even the Gods.