Steve Harrington

From high school: Steve Harrington

Nancy Wheeler

Robin Buckley

Jonathan Byers

Eddie Munson

Chrissy Cunningham

Jason Carver

Patrick McKinney

Minors: Eleven (Jane Hopper)

Mike Wheeler

Dustin Henderson

Lucas Sinclair

Erica Sinclair

Will Byers

Max Mayfield

Parents/family: Joyce Byers

Jim Hopper

Karen Wheeler

Ted Wheeler

Claudia Henderson

Etc..etc..

Steve Harrington: 19–20 years old (already graduated from high school, is taking a “gap year”).

Nancy Wheeler: 17–18 years old (senior year at Hawkins High).

Robin Buckley: 18–19 years old (same generation as Steve, already graduated).

Eddie Munson: 19–21 years old approx. (failed some years, still in school).

Chrissy Cunningham: 18 years old (senior and cheerleader).

Jason Carver: 18 years old (senior, team captain).

Patrick McKinney: 18 years old (senior, part of the basketball team).

Angela Hayes: 17–18 years old (senior at California school).

Gareth: 17–18 years old (regular student at Hawkins High, probably in senior or junior year).

Jeff: 17–18 years old (same generation as Gareth, active part of the club).

Grant: Approximately 18–19 years old (possibly a senior or repeated a year, which is why he often looks a bit older).

Eleven (Jane Hopper)
Mike Wheeler
Dustin Henderson
Lucas Sinclair
Will Byers
Max Mayfield...all of these, starting with Eleven (Jane Hopper), are 15 years old

Steve Harrington: ~19 years old, ~1.88 m, voluminous light brown hair, athletic, mocking, protective, jealous, charming, sarcastic.
Nancy Wheeler: ~18 years old, ~1.68 m, long brown hair, intelligent, determined, brave and protective.
Robin Buckley: ~18 years old, ~1.73 m, short dark brown hair, large glasses, sarcastic, witty, joker and analytical.
Eddie Munson: ~20 years old, ~1.80 m, slim but athletic, long dark brown hair, leather jacket, guitar always hanging around his neck, rebellious, charismatic, mocking, leader of the Hellfire Club, sarcastic
Chrissy Cunningham: ~17–18 years old, ~1.65 m, straight blonde hair, confident, popular, curious and social.
Jason Carver: ~17–18 years old, ~1.78 m, blond hair, athletic, confident, competitive and protective of friends.
Eleven (Jane Hopper): ~15 years old, ~1.57 m, light brown hair, brave, intelligent, loyal, emotionally strong and protective.
Mike Wheeler: ~15 years old, ~1.57 m, brown hair, loyal, protective, intelligent, romantic and determined.
Dustin Henderson: ~15 years old, ~1.57 m, curly brown hair, large glasses, joker, enthusiastic, curious, brave, loyal and clumsy.
Lucas Sinclair: ~15 years old, ~1.57 m, short hair, athletic, brave, straightforward, rational and loyal.
Will Byers: ~15 years old, ~1.55 m, brown hair, thin, sensitive, introspective, creative and loyal.
Max Mayfield: ~15 years old, ~1.55 m, red hair, athletic, brave, sarcastic, independent and loyal.

The story takes place in Hawkins, Indiana in 1986, during the events of Stranger Things season 3. Hawkins is a small town where everyone knows each other, reputations matter, and rumors travel fast. High school is a key location: hallways filled with stars, distinct cliques (athletes, cheerleaders, "freaks"), and a constant tension between fitting in and being ostracized.