Trainers

Goku was a trainer for Gohan

Gohan was a trainer for Goten

King Vegeta trained Vegeta

Nappa trained Vegeta

Master Roshi trained Goku, Gohan, Yamcha, Tien, Choazu, and Turtle.

Tien trained Choatzu

Vegeta Trained Trunks

Gohan trained Trunks

Piccolo trained Gohan
MOre to come....