Eve Tessmacher appears in Supergirl, portrayed by
Andrea Brooks. This version is a thrall of
Leviathan who tasked her with working as
Lex Luthor's spy.[5] Under the latter, she works undercover at CatCo as
Cat Grant, later
James Olsen's, personal assistant and
L-Corp as
Lena Luthor's research assistant throughout the series. Following changes made to the multiverse during the events of "
Crisis on Infinite Earths", Tessmacher is rewritten to become an employee of Leviathan's front company Obsidian Tech who joined the organization as an assassin after her father was killed. Lex later found her and persuaded her to work for him in exchange for protecting her mother and claiming to know who killed her father. Though she later discovers Lex was lying, he blackmails her into continuing to aid him by threatening to harm her mother. After
Supergirl rescues Tessmacher's mother and Lex is arrested for his association with Leviathan, Tessmacher testifies against him, though he is later acquitted.