Upset, Lois confronts Superman, accusing him of having an affair (even listing Wonder Woman and Zatanna as possible lovers), and refusing to believe his claim of innocence, since "Supergirl" looks just like him.

The Futuresmiths tell him that Cir-El's death will prevent this future, and as they turn to attack her, Superman flies her to safety.

Superman's Kryptonian robot Kelex subsequently confirms that Cir-El is not the Man of Steel's biological daughter (despite the evidence from S.T.A.R.

He then implanted false memories in Cir-El and had his servants, the Futuresmiths, send her out into the world (along with the nano-virus, which was placed in coffee to proliferate the virus and infect the population) in order to unknowingly alter the future, and lead Superman to create a synthetic body to save Lois from her "Yes" infection in the future (for Brainiac to inhabit).

Thanks to the time-traveling efforts of Bizarro in Superman/Batman #24, Cir-El is able to join Linda Danvers, Kara Zor-El (both Modern Age and Pre-Crisis versions) and Power Girl to rescue Superman from the Source Wall.

A hybrid of human/Kryptonian origin, Cir-El can absorb yellow sunlight to gain immense strength, durability, speed, and hearing.

[3] Cir-El's "trademark" power is the ability to release stored energy from her hands as blasts of red solar radiation (the very wavelength of sunlight that Superman loses his powers under) that strike an enemy with intense heat and force she named "Red Sunbursts".

Instead of the traditional S-Shield, Cir-El instead sported a simple large red letter S that went down the length of her upper torso.