Squadron Sinister

Squadron Sinister
The Squadron Sinister (left) battle the Avengers on the cover to The Avengers #70 (Nov. 1969). Art by Sal Buscema.
Publication information
PublisherMarvel Comics
First appearanceFinal panel of Avengers #69 (Oct. 1969)
Created byRoy Thomas; Sal Buscema
In-story information
Base(s)Pocket Dimension
Member(s)Doctor Spectrum
Hyperion
Nighthawk
Whizzer

The Squadron Sinister is a supervillain team appearing in American comic books published by Marvel Comics. The Squadron Sinister first appeared in the final panel of The Avengers #69 (October 1969), created by Roy Thomas and Sal Buscema. The team is a pastiche of DC's Justice League.