A mysterious and powerful girl with a shaved head and a small, fragile appearance, she escapes from a secret laboratory where she was experimented on for her supernatural abilities. She is quiet, shy, and often struggles to understand normal emotions and social situations because she grew up isolated from the outside world. Despite her innocent appearance, she is incredibly brave and protective of the people she cares about, using her telekinetic powers to fight danger and help her new friends find the truth about the Upside Down.

A determined and loyal boy with brown hair, a slim build, and a caring personality, he is one of the main members of the friend group searching for his missing friend. He is brave, intelligent, and often acts as the leader, making plans and refusing to give up even when things become dangerous. He quickly becomes close with the mysterious girl he finds and helps her experience friendship and a normal childhood while facing the terrifying events happening in Hawkins.

A cheerful and clever boy with curly brown hair, a round face, and a friendly personality, he is one of the most loyal members of the group. Known for his humor, curiosity, and positive attitude, he often helps his friends solve problems using his intelligence and creativity. Despite being scared during dangerous situations, he stays brave and supports his friends through the search for Will and the mysteries surrounding Hawkins.

A cautious and determined boy with short dark hair, a serious expression, and a practical personality, he is one of the closest friends in the group. He is more skeptical and careful than the others, often questioning strange situations before believing them, but he is also brave and loyal when his friends need him. He carries a wrist-mounted slingshot and uses his quick thinking and courage to help fight against the dangers in Hawkins.

A quiet and sensitive boy with brown bowl-cut hair and a gentle appearance, he is kind, creative, and close with his friends and family. After mysteriously disappearing, he becomes trapped in a terrifying alternate dimension called the Upside Down, where he struggles to survive while trying to communicate with the people searching for him. Despite being frightened and isolated, he remains strong and determined throughout the events surrounding his disappearance.

A caring and determined woman with short brown hair and an emotional, intense personality, she is a devoted mother who refuses to give up when her son disappears. She is protective, persistent, and willing to risk everything to find him, even when others doubt her. As strange events begin happening around Hawkins, she follows her instincts and uncovers the terrifying truth behind her son's disappearance and the Upside Down.

A tired but strong-willed man with a rugged appearance, messy brown hair, and a serious expression, he is the police chief of Hawkins. He is initially seen as a worn-down and isolated person, but he proves to be caring, brave, and determined when he begins investigating the disappearance of a young boy. He uncovers the secrets behind Hawkins Laboratory and risks his life to protect the people of the town.

A smart and determined teenage girl with long brown hair and a neat, confident appearance, she is the older sister of one of the boys in the friend group. At first, she is focused on school, her relationship, and fitting in, but after her friend disappears, she becomes brave and determined to uncover the truth. She faces the dangers of the Upside Down, showing her courage, intelligence, and willingness to fight for the people she cares about.

A quiet and thoughtful teenage boy with messy dark hair and a slim appearance, he is the older brother of the missing boy. He is sensitive, observant, and often feels like an outsider, spending much of his time taking photos and looking after his family. After his brother disappears, he becomes determined to find him and works with others to uncover the truth behind the strange events in Hawkins.

A popular teenage boy with thick brown hair, a confident appearance, and a charming personality, he starts as one of the well-known students at Hawkins High. At first, he seems focused on his social status and relationship, but after becoming involved in the strange events happening in town, he begins to show a more caring and courageous side after being an asshole. He proves that he can be loyal and protective, especially when his friends are in danger.