During the Crisis on Infinite Earths, Lurlan Dupo was convened by Guy Gardner with a group of supervillains to destroy the base of the AntiMonitor on the moon of Qward,which in theory would eliminate the power of Antimonitor. But end up being caught in the middle of a battle between Green Lantern and Weaponers of Qward,taking advantage of the distraction of battle,Lurlan Dupo and Goldface,kill the Green Lantern Tomar-Re and running away.Under the orders of the Guardians of the Universe, the Green Lanterns Arisia, Ch'p and Salaak in its capture and holds them. Sometime later, after the Guardians had withdrawn from the universe, events orchestrated by Sinestro caused the collapse of the Central Power Battery, briefly freeing the sciencell prisoners. They were rounded up and transferred back