Supergirl

Supergirl (also known as Cir-El or Mia) is a fictional superhero appearing in American comic books published by DC Comics. The character is best known as one of the characters to have assumed the mantle of Supergirl. Created by writer Steven Seagle and artist Scott McDaniel, she first appeared in Superman: The 10¢ Adventure #1 (2003) as the alleged daughter of Superman. She is later found to be a human girl who was genetically altered by the villain Brainiac to appear Kryptonian. The character dies thwarting a plot involving Brainiac 13. Superman (vol. 2) #200 implies that when the timeline realigned itself, Cir-El was erased from existence.