The return of the Legendary Saiyan!! is the twelfth chapter of Dragon Ball Multiverse and the third special chapter. This chapter continues the storyline seen in Chapter 8. The events in this chapter has occurred in Universe 4, 6, 16, 18, and 20.
Broly nearly hit the Sun from Gokū's Spirit Bomb, but the gravity of New Vegeta attracted him back to the planet. After six years, he got his strength back and headed to planet Earth, but lost consciousness on the way there. Gohan was searching for Goten so he could train him. Goten and Trunks were searching for the Dragon Balls to fulfill their own desires.
Trunks fired a Ki blast into the ocean for a Dragon Ball underneath, but ended up creating a tidal wave instead. This caught the attention to Broly, who was apparently under the ocean. He sensed Goten and Trunks and immediately piledrived them. The rest of the Z-fighters could sense this happening, so they rushed towards it. Broly continued his assault on Trunks and Goten, until Vegeta arrived and punched Broly in the jaw. Vegeta then attempted to kick Broly, but he countered with a punch. Gohan went underwater, worried the kids were already dead. Android 18 arrived and told Gohan to look for the others while she finds the kids.
As Vegeta continued fighting Broly, Gohan arrived and warned Vegeta to attack Broly before he a Legendary Super Saiyan. Yet it was too late and he transformed. Vegeta did not seem worried, since he was much stronger after battling Cell. He went to punch Broly again, but it was unsuccessful. Gohan sees Android 18 rise from underwater with the beaten Goten and Trunks. This triggers Gohan's anger and cause him to transform into a Super Saiyan 2. He then knees Broly into the face and slams Broly down below. Piccolo arrives and warns Vegeta about his power increase, which they would have to work together to stop. Gokū could sense this power, but King Kai did not halted Gokū before he could do anything. Gohan was overpowered by Broly and was knocked down. Vegeta was charging his Final Flash while Gokū was charging a Kamehameha through King Kai's admittance.
As Broly was about to finish off Gohan, Piccolo intervenes and begins fight Broly. Gohan witnesses Piccolo get his arm ripped off and fires his own Kamehameha. As Vegeta fired his Final Flash, Gokū arrives and fired his Kamehameha. Broly releases Piccolo to fend off the blast, but it overwhelms him and sends him flying into the Sun. Gokū disappears after and Piccolo regenerates his limbs. By a stroke of luck, the Broly in Universe 20 was able to evade the Sun.