Optiman is native of earth-36 and one of the analogs of Superman through the multiverse. In his world his role was similar to the last son of Krypton, as the leader and inspiration for the super team Justice-9. He also was recruited by Captain Marvel as member of the Supermen of the Multiverse against Mandrakk. However he was no match to Superdoom, a thought robot from earth-45, who killed him, depiste the help of the other heroes.
However Optiman was far from ending. He returned as a gentrified zombie to haunt his former teamates as part of the Gentry attack. Apparentely however, the menace was halted and now Optiman again rest in peace.
Optiman has been revealed as returned to life in the DC Pride book of 2023. He explained than the Black Lens were the ones who bought him back. If his teammate Flashlight was related to that event (as he manages lens of different colors in his power item) it was unclear. in this issue, Optiman helped Flashlight to search a source of energy than could indicate the return of their teammate Red Racer, after being presumed dead.
As the rest of the natives of earth-36, Optiman is a homage/parody to Bigbang’s Ultiman who is indeed a homage/parody to Superman himself.