King Kai trained Goku after his death at the hands of Raditz.
After his death, Goku was given the opportunity by King Yemma to travel to King Kai's planet and train. King Kai, a powerful and knowledgeable being, agreed to train Goku. This training was essential for Goku to prepare for the arrival of the Saiyans, Vegeta and Nappa, who were far stronger than Raditz.
Goku's training with King Kai involved several key components:
- Increased Gravity: King Kai's planet had gravity ten times that of Earth, forcing Goku to adapt and drastically increase his strength and speed.
- Martial Arts Improvement: King Kai taught Goku advanced fighting techniques and helped him refine his existing skills.
- Ki Control: Perhaps most importantly, King Kai taught Goku how to sense and control his Ki, allowing him to harness energy for powerful attacks. This led to the development of techniques like the Kaio-ken and the Spirit Bomb.
The training with King Kai was pivotal in Goku's development as a martial artist and allowed him to become strong enough to challenge the Saiyans and later, even stronger opponents. Without this training, Goku would have likely been defeated easily.
