watch 01:50 The Loop (TV) Do you like this video? Meaghan Rath (born June 18, 1986) is a Canadian actress. She portrayed Querl Dox/Brainiac 5 in Supergirl. Contents[show] Credits Supergirl Actress Season 5 "The Bottle Episode" Querl Dox/Brainiac 5 Trivia Meaghan is the older sister of Jesse Rath, who portrays Querl Dox, the male Brainiac 5. Retrieved from "https://arrow.fandom.com/wiki/Meaghan_Rath?oldid=617753" Categories: Actors Guest stars Community content is available under CC-BY-SA unless otherwise noted.