Son Goku is not the hero yet. He is a wild child raised alone in the mountains, strong enough to punch through boulders and naive enough to think Bulma's bra is some kind of helmet. When Bulma shows up hunting the seven Dragon Balls, Goku tags along, and what starts as a road trip comedy slowly, patiently, becomes the blueprint every shonen series after it would spend decades copying.
Produced by Toei Animation from Akira Toriyama's manga, Dragon Ball aired on Fuji TV from 1986 to 1989. 153 episodes that build Goku from a feral kid who has never seen a car into a genuine martial artist under Master Roshi's training, through two World Martial Arts Tournaments that establish the cast - Krillin, Yamcha, Tien, Chiaotzu - who would carry the entire back half of the franchise. Then Piccolo Daimao arrives, and the show that started as slapstick adventure comedy pivots into something considerably darker, ending on a cliffhanger that walks directly into the story everyone actually remembers.
This is the part people skip. That is a mistake. Every rule Dragon Ball Z would spend 291 episodes escalating - the tournaments, the training arcs, the villain who turns ally, the power that comes from pushing past your limit - gets written here first, at a fraction of the stakes and twice the charm. Goku punching a dinosaur because he is hungry. The Kamehameha as a discovery, not a signature move yet. Before he was the strongest fighter in the universe, he was just a kid who wanted to eat.
Watch this first. Or watch it after Z, once you already love him, and see where all of it actually started.