when did thanos first appear in the comics
Thanos Thanos' first appearance was in The Invincible Iron Man #55 (February 1973), featuring a story by Jim Starlin that was co-scripted by Mike Friedrich. The storyline from that issue continued through Captain Marvel #25–33 (bi-monthly: March 1973 – Jan. 1974), Marvel Feature #12 (Nov. 1973), Daredevil #107 (Jan. 1974), and Avengers #125 (July 1974). He returned in an extended storyline that spanned Strange Tales #178–181 (Feb.–Aug. 1975), Warlock #9-11 (Oct. 1975 – Jan. 1976), Marvel Team Up #55 (March 1977), and the 1977 Annuals for Avengers and Marvel Two-in-One (Thanos does not actually appear until the end of Warlock #9). He was also featured in a short backup story in Logan's Run #6 (June 1977) and had a small role in the Death of Captain Marvel graphic novel (April 1982).