Masters of Evil

The Masters of Evil are a fictional supervillain team featured in comic books published by Marvel Comics. They are part of the mainstream Marvel Universe and are frequently presented as foes of the Avengers. They first appeared in Avengers, Volume 1 #6 in July, 1964. To date, there have been nine incarnations of the team. One iteration of the group rebranded itself in the guise of a superhero team and began calling themselves the Thunderbolts.