Antagonists

The antagonists and villains featured in Stranger Things.

Seasons	Major Antagonists	Secondary and Minor Antagonists
Season 1	The Monster Dr. Martin Brenner Connie Frazier	Troy Walsh & James Dante Tommy H & Carol Perkins Lonnie Byers
Season 2	The Mind Flayer Demodogs	D'Artagnan Billy Hargrove Neil Hargrove
Season 3	The Mind Flayer The Spider Monster Billy Hargrove The Flayed Soviet Union Grigori	Mayor Larry Kline Ozerov Stepanov Zharkov Heather Holloway Tom Holloway Bruce Lowe Hospital Monster
Season 4	Vecna	Jason Carver Lt. Col. Jack Sullivan Warden Melnikov Yuri Ismaylov Demobats The Mind Flayer Russian Demogorgon Demodogs Soviet Union Dr. Martin Brenner Two Angela