Inferno (Dante Pertuz) is a superhero appearing in American comic books published by Marvel Comics. Created by Charles Soule and Joe Madureira, the character first appeared in Inhuman #1 (June 2014).[1]
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.