Thanos is a supervillain created by Jim Starlin that appears in Marvel Comics. Thanos is among the most famous supervillains and among the most powerful beings in the Marvel Universe. Since his first appearance in 1973, Thanos appeared in several movies, animated television series, novels, video games, and other forms of media. Most notably, Thanos was included in the first three phases of MCU – also known as Infinity Saga.