Natasha Irons (as Starlight) first appears in 52 #21. After gaining super-powers from Lex Luthor's Everyman Project during the events of 52, Natasha takes on the codename Starlight and joins Infinity Inc.
Natasha Irons (as Natasha Irons) first appears in Steel (vol. 2) #1. This marks the character's introduction to the DC Comics universe, created by Louise Simonson and Chris Batista. She is introduced as the niece of John Henry Irons, who is the superhero Steel.