Alexz World, A fan site devoted to singer/actress Alexz Johnson, confirms that the actress is set to play Saturn Girl Irma Ardeen in the upcoming "Legion" episode of 'Smallville'
The site's author writes, "...the rumours that Alexz is guest-starring in the long-awaited 'Legion' episode of 'Smallville' are true. She is filming this episode as she awaits the final mix of what may be the final song for her album."
The episode, written by comics super-writer Geoff Johns, will introduce the Legion of Superheroes to the show's mythology.