Do you want to compare KillGrave with Supergirl? Discover the powers, weakness & weapons of KillGrave and Supergirl from KillGrave Biography and Supergirl Biography. Find out all about KillGrave and Supergirl.# Check out how is KillGrave unique and distinct from Supergirl. Discover their love interest, sidekicks, family tree and the movies and games list in which KillGrave and Supergirl have appeared. Find out everything about them here!