- Run, Matthew! Go for the trees! Ta... take Nicole and go! I... I'll try... and give you... some time! I... I'm finished, son! I've done... all I can... Just do as I say, Matt... please. I'm counting on you, boy. Protect your sister!
- — Stephen Callahan src
Callahan went on the run with his wife and children. They were hunted down by a squad of Black Razors, told to take only Matthew and Nicole alive. Rachel was shot in the back while running away. He told his children to escape, while he killed several of the gunmen. Despite these efforts, a sniper shot him in the head and they abducted Matthew and Nicole.
Callahan's children would all grow up with super-powers. Matthew and Nicole would become Threshold and Bliss, working for I.O. under Ivana Baiul. Sarah Rainmaker would grow up to become Rainmaker as a member of Gen 13.
- Gen 12 (Volume 1)
- Team 7
- 19 Appearances of Stephen Callahan (Wildstorm Universe)
- 13 Images featuring Stephen Callahan (Wildstorm Universe)
- 1 Quotations by or about Stephen Callahan (Wildstorm Universe)
- Character Gallery: Stephen Callahan (Wildstorm Universe)