The Kaio-Ken was first taught to Goku by King Kai in the other world. The move gives Goku a direct boost to power, speed, and ki at the cost of intense strain on the body. If he overuses the Kaio-Ken, ...

"From Goku’s legendary Super Saiyan debut to the godly power of Ultra Instinct, these are the most epic Saiyan transformations in Dragon Ball history! Watch till the end to see which one stands above ...