watch 01:51 The Loop (TV) Do you like this video? An unnamed girl was the sister of John Constantine. Background The name of John Constantine's sister in the comics, was Cheryl Masters. Instead of her leaving John behind with their father, she had stayed when John left at 17. Appearances Constantine "The Rage of Caliban" (mentioned) Retrieved from "https://arrow.fandom.com/wiki/John_Constantine%27s_sister?oldid=327745" Categories: Characters No homeuniverse parameter No species parameter Broken Ep link Community content is available under CC-BY-SA unless otherwise noted.