~~Goku ~Level 1:When Krillen dies at the hands of Frieza. ~Level 2:When he was training in the afterlife. ~Level 3:When he was training in the afterlife. ~Level 4:In DragonBallGT, the Bebi saga, goku grows his tail and he changes into Golden Oozaru
~~Vegita ~Level 1:After the Frieza saga, Vegita gets mad because Goku and Trunks can go SSJ and he can't ever beat him. He became so angry that he himself became SSJ. ~Level 2:Vegita goes SSJ2 while being Majin-Vegita ~Level 4:Bulma created a Brute Ray which made Vegita go SSJ4 and skip SSJ3.
~~Gohan ~Level 1:While training with Goku in the Room of Spirit and Time, he goes SSJ. ~Level 2:When Cell destroys Android 16.
~~Future Trunks ~Level 1:When Gohan is destroyed by the Androids.
~~Goten and Trunks ~Level 1:Trunks and Goten didn't need to be angry to go SSJ.