Olivia Reynolds is a fictional character in the DC Comics universe. She has a latent superpower, and has been abducted by various races who wanted to harness the power, and temporarily became a villainess. All memories of her experiences with the U-Mind have now been blocked after she was mindwiped.

Sigrid Nansen is a superhero in American comic books published by DC Comics, first appearing in Super Friends #9. Originally the first character to use the name Icemaiden, they replaced the hero known as Ice for a time. They are among the few ice-theme superheroes in the DC Universe. The character is eventually re-introduced during "Infinite Frontier", adopting a new identity as Glacier and identifies as non-binary.