Jean Napier (Earth-78)

"All I do, I do to carry the legacy of Jack."

- - Jeannie Napier to Frank Simpson

Jean "Jeannie" Napier was the ex-wife of Jack Napier, whom they parented the unborn Bruce. Divorcing from him after Jack distanced himself and became suicidal, Jean started working as a pharmaceutical, but was secretly brought in his life as the Joker when she agreed to help him punish those they deemed ungrateful of being alive.