Guest Stars Jesse Rath as Querl Dox / Brainiac-5 Erica Durance as Alura Zor-El Carl Lumbly as Myr'nn J'onzz Emma Tremblay as Ruby Arias Anjali Jay as Serena Amy Jackson as Imra Ardeen / Saturn Girl Chad Lowe as Thomas Coville Betty Buckley as Patricia Arias Rosemary Hochschild as Vita Winsome Brown as Ayala Co Starring Barbara Patrick as Woman Uncredited Melissa Benoist as Snowbird / Linda Lee / Red Daughter