3) THE TWO-GUN KID
Matt Hawk (aka Matt Liebowitz) is the second Two-Gun Kid in Marvel Comics history. In his first adventure, he takes on the identity of The Two-Gun Kid, referencing dime novel adventures about the original Kid, who starred in the first 59 issues of the book. Later, Hawk himself became the hero of dime novels referenced by modern heroes before time-traveling into the future to meet The Avengers. That makes him a cowboy hero from a dime novel within a comic inspired by a character from a dime novel within his comic… Extra meta!