The Thunderbolts are an antihero team appearing in American comic books published by Marvel Comics. The team consists mostly of reformed supervillains. Created by Kurt Busiek, the team first appeared in The Incredible Hulk #449
This is going off the debut of comic book characters. In the cases of characters who were introduced in other media originally and added to the comics canon later along (ex: Harley Quinn) it'll go by actual debut year.
