Meta Ulnoor was once considered to be the most promising psychic on Titan since Saturn Girl. However, her temper and arrogance prevented her from genuinely achieving Saturn Girl's levels. Meta left Titan to challenge Saturn Girl for her spot on the Legion of Super-Heroes but was rejected. Angered by the rejection, Meta joined with other rejects to form the Legion of Super-Rejects. This team challenged the LOSH but were defeated and shamed. Meta and two of her fellow Super-Rejects, Magno Lad and Micro Lad, went on to join the Legion of Super-Villains with whom she has participated in many battles. Esper Lass was among the most eager participants in the LSV’s massive assault on the Legion of Super-Heroes in 2985. She was extremely valuable for her ability to telepathically coerce or control her more psychotic or uncooperative teammates, such as the mad Daxamite Ol-Vir. She also secretly leeched all of the Gil’disphan Zymyr’s dimensional-travelling technology from its mind. Nevertheless, she was captured with the remainder of the LSV and is currently in custody on Labyrinth, the United Planets prison-world. Esper Lass is later seen again as a member of the Legion of Super-Villains. Her last pre-Zero Hour appearance was a cameo during the Crisis on Infinite Earths. She was later seen in Final Crisis: Legion of 3 Worlds #2, once again a member of the Legion of Super-Villains. She's later seen attacking Saturn Girl's mind, along with Saturn Queen. In the next issue, she's been mentally blocked by the Saturn Girl of Earth-Prime, to stop her from aiding Saturn Queen.