Gohan became a Majin after he saw the gap in power he had after years of not training, so he asked Babidi to turn him into a Majin. Babidi was scared so he accepted and he turned Gohan into a Majin. Gohan's power level raised by 15,000,000 and he became slightly evil. In this form Gohan defeated Super Buu W/ Piccolo absorbed. Although he had a hard time due to depression he later killed him self due to having a hard time on deciding to be a warrior or a student . He Cannot go back from his decision the spell is permanent.