Lavender's History
Universe Survival Saga
Lavender and the other members of Trio the Dangers are selected to participate in the Zeno Exhibition Match, a small lead-up tournament that precedes the Tournament of Power. Universe 9's team is matched up against Team Universe 7, and Lavendar faces off against Gohan.
Lavender immediately goes to attack Gohan, who attempts to attack him, but Lavender evades by jumping onto Gohan's arm and breaths poison into his face, blinding him. Lavender then blows poison onto his hands, and starts to mercilessly attack Gohan. When Gohan starts to notice him, Lavender slowly walks around Gohan and mocking him, but to his surprise, Gohan blocks the attack. After taking blows from Gohan, Lavender realizes how Gohan knows his exact locations and starts to fly so Gohan can't hear him and fires poisoned infused Ki blasts at him. However, Gohan transforms into a Super Saiyan and starts deflecting the energy waves. They start trading blows with Gohan gaining the edge until he faints from the poison.
Lavender starts to mercilessly attack Gohan again until he wakes up and gains the upper hand on Lavender again. Lavender fires a gargantuan poison infused ki blast at Gohan, who counters it with a Kamehameha, but suddenly the poison progresses through Gohan's arms, allowing Lavender to easily gain the upper hand, and launch Gohan to the ground. Lavender then breaths a large poison cloud at Gohan, but he flies right through the cloud, catching Lavender by surprise, grabs him, and drives him into the ground. When the smoke clears, Lavender twitches and is knocked out cold. Gohan then says that he has won, and passes out due to the poison. The Grand Minister then says that Gohan did not win, but the match is in fact a draw since none of the combatants are able to continue with the match.
After the preliminaries, Lavender and his team are sent back to their universe. While on their planet, the Trio of Dangers, Sidra, and Roh have a hard time recruiting members for their team. However, by the time of the Tournament of Power, they managed to recruit 7 more members into the group representing Universe 9.
The Battle Royale begins and he, Comfrey, Shosa, Botamo and Dercori set their sights on Gohan, Piccolo, Tien Shinhan, Krillin, and Master Roshi. When they charged at them, the Universe 7 fighters jumped up into the air and attacked them with their signature moves after being blinded by Tien's Solar Flare. When the dust cleared however, they were still fine. Later on, Lavender, his brothers, and two others fighters attempt to gang up on Goku.
Lavender and his brothers fought against Goku and nearly defeated him until Vegeta steps in. Lavender and Hopp focused their efforts on Vegeta and their teamwork became sloppy the moment they were seemingly close to victory. With Lavender and his brothers remaining after the rest of Team Universe 9 were defeated, they combine their powers but were ultimately defeated. Lavender, his brothers, Team Universe 9, Sidra, and Roh were erased by the two Zenos.
In the manga, Lavender arrives alongside his brothers and the other members of Team Universe 9 to compete in the Tournament of Power. Early on the trio face off with Team Universe 3's Pancéa, Koitsukai and Narirama. The trio go on to attack Gohan and gain an edge over him thanks to their teamwork, though when Gohan sees Piccolo in trouble he is able to knock them away with an explosive wave. The trio then regroup with the rest of Team Universe 9 as the entire group face Gohan and Piccolo, however before they can begin to fight Frost interrupts and eliminates the entire team aside from the Trio of Danger, who retreat. The trio then begin their attack on Gohan and Piccolo once more, when they split up Bergamo tells Basil and Lavender to go after Gohan, however as they leap towards him they are both knocked off stage by Frieza. When Frieza goes on to eliminate Bergamo, Universe 9 is erased.
Lavender is later revived with his universe when Android 17 uses the Super Dragon Balls to resurrect all of the universes that were erased.