 Broly eventually rages out and this leads to a small battle, to which Broly is able to overcome the mind control device and explode into his true form, the Legendary Super Saiyan.He effortlessly overpowers Goku, Vegeta, Gohan, and Trunks as well as Piccolo before killing his own father.He is eventually defeated by Goku, who was able to gain energy from the others and capitalize on Broly dropping his guard for a final attack, and punches a hole through Broly's abdomen which seemingly destroys him.