The older[1] sister of fellow supervillain Mammoth, she is a founding member of the Fearsome Five and enemy of the Teen Titans.

The character made her live-action debut in the second season of the DC Universe series Titans, portrayed by Hanneke Talbot.

Shimmer first appeared in The New Teen Titans #3 and was created by George Pérez and Marv Wolfman.

After attacking their bullies, the two were sent to Markovia, where Helga Jace cared for them before they became criminals.

[6][7] In The New 52 reboot, Shimmer is reintroduced as a member of the Fearsome Five and the Secret Society and ally of the Crime Syndicate of America.