Theresa Claro's father was severely beaten by muggers. To exact revenge, she dressed up as an old man and preyed on the muggers. She killed several people before being exposed by Lois Lane.
- This version of Theresa Claro (Earth-One), including all history and corresponding appearances, was initially erased from existence following the collapse of the original Multiverse in the 1985–86 Crisis on Infinite Earths limited series. However the ending of Convergence retroactively prevented that collapse, saving all the alternate realities, though in an "evolved" form. Even though versions of the character may have since appeared, this information does not apply to those versions.
- Enemy of Lois Lane
- 1 Appearances of Theresa Claro (Earth-One)
- 1 Images featuring Theresa Claro (Earth-One)
- Quotations by or about Theresa Claro (Earth-One)
- Character Gallery: Theresa Claro (Earth-One)