Psi (comics)

Psi is a supervillain appearing in media published by DC Comics, primarily as an enemy of Supergirl. She was created by Paul Kupperberg and Carmine Infantino, and first appeared in The Daring New Adventures of Supergirl #1.

Fictional character biography

Gayle Marsh is an orphan who is raised by the scientist David Pendergast to battle a villain called Decay. After inadvertently transforming Pendergast into the Decay, Gayle helps Supergirl defeat him.
Following the Crisis on Infinite Earths continuity reboot, Psi joins the Suicide Squad before being killed in battle with the Rocket Red Brigade.
In Blackest Night, Psi is temporarily resurrected as a Black Lantern. In The New 52 continuity reboot, Psi is permanently resurrected and depicted as a prisoner of A.R.G.U.S.

In other media

Psi appears in Supergirl, portrayed by Yael Grobglas. This version was "a law-abiding citizen of Skokie, Illinois" until she "snapped" and began robbing banks.
* A separate incarnation of Psi appears in the tie-in digital comic Adventures of Supergirl. This version is a Kryptonian psychic who works in the maximum security prison Fort Rozz, controlling the prisoners' dreams to secure their mental health.