|Aliases:||Mary "Zed" Martin|
|First:||"The Darkness Beneath"|
|Final:||"Waiting for the Man"|
Mary "Zed" Martin is a fictional psychic & cult survivor and one of the main characters on the NBC television series Constantine. Played by actress Angélica Celaya, she was introduced in the second episode of the show, "The Darkness Beneath" as a replacement for the character of Liv Aberdine, who was written out of the series following the pilot episode, "Non Est Asylum". Zed made eleven appearances in the series in total.