Wild Dog is a Quad Cities vigilante who targets domestic terrorism. His super-power is guns. In his civilian identity he is the mechanic Jack Wheeler, who injured his knee in college and lost a football scholarship. He joined the Marine Corps and quit when his squad was killed by terrorists, then began fighting crime when his girlfriend was gunned down by mobsters. Despite being an excellent marksman, he is famous for simply spraying bullets until his enemies are dead. A version of the character named Rene Ramirez was later introduced in the Arrowverse. Wild Dog was created by Max Allan Collins and Terry Beatty, first appearing in Wild Dog #1 (1987).