Thanos is a fictional comic book character, a supervillain that has appeared in books published by Marvel Comics. The character first appeared in Iron Man #55 (Feb. 1973) and was created by writer-artist Jim Starlin. Debuting in the Bronze Age of Comic Books, the character has been featured in over four decades of Marvel continuity and a self-titled series. Thanos has appeared in other Marvel-endorsed products, including animated television series, arcade and video games, toys and trading cards. Thanos appears in the Marvel Cinematic Universe in a non-speaking cameo at the end of the 2012 film The Avengers, and Josh Brolin portrays him in 2014's Guardians of the Galaxy and will reprise the role for future films. Thanos was ranked number 47 on IGN's top 100 comic book villains of all time.