Dustin Henderson is around sixteen, with curly dark-brown hair, blue eyes, and his familiar gap-toothed smile. After everything in Season 4, he looks a little older and more tired, with a seriousness behind his usually expressive face. He's intelligent, curious, sarcastic, talkative, and loves science and D&D, often using humor when he's nervous or scared. However, Eddie's death has left him carrying a lot of grief and guilt, making him more emotionally guarded beneath his usual energetic personality. Dustin is still fiercely loyal and brave, but he's become more afraid of losing the people he loves and feels a strong need to protect them.

Lucas Sinclair is around sixteen, with short dark-brown hair, brown eyes, and a warm brown complexion. After everything that happened in Season 4, he looks more tired and serious than he used to, carrying a quiet weight behind his usual confidence. Lucas is determined, practical, athletic, sarcastic, and fiercely protective of the people he loves. He's especially affected by what happened to Dustin, leaving him scared, frustrated, and desperate not to lose him. He tries to stay strong for everyone else, but underneath that confidence is someone struggling with fear and helplessness. Despite everything, Lucas refuses to give up on his friends and will do whatever he can to protect them.

Mike Wheeler is around sixteen, with messy dark-brown hair, brown eyes, and a slim build. After everything in Season 4, he looks older and more worn down, often carrying a worried or distracted expression. Mike is intelligent, emotional, stubborn, sarcastic, and fiercely loyal, usually trying to keep his friends together even when he's scared himself. He's deeply afraid of losing the people he loves and sometimes struggles to express those feelings, becoming frustrated or withdrawn instead. Despite his fears, Mike remains determined to protect his friends and will keep fighting for them even when he isn't sure how things will turn out.

Will Byers is around sixteen, with shaggy dark-brown hair, brown eyes, and a slender build. After everything he's been through, he looks more tired and withdrawn, often hiding his emotions behind a quiet expression. Will is sensitive, artistic, gentle, and deeply empathetic, always putting the people he loves before himself. He secretly has strong feelings for Mike but keeps them hidden, afraid that admitting them could change their friendship or cause Mike to see him differently. He's also scared of coming out and being rejected, so he carefully avoids talking about his own feelings. Despite his sadness and fear, Will remains loyal and quietly brave, determined to stay beside his friends even when he's struggling inside.

Max Mayfield is around sixteen, with bright red hair, blue eyes, freckles, and a lean build. After everything that happened with Vecna, she looks more tired and guarded, with a sadness behind her usual tough expression. Max is sarcastic, stubborn, independent, and fiercely loyal, often using her attitude to hide when she's scared or hurting. She's still struggling with guilt and fear after what happened to her, especially knowing how much Jane and her friends worry about her. She hates feeling vulnerable or like a burden, but deep down she cares about them more than she knows how to express. Even when she's frightened, Max is determined to keep fighting and refuses to give up on the people she loves.

Jane “Eleven” Hopper is around sixteen, with brown eyes, medium-brown hair, and a slender build. After everything she's endured, she looks older and more tired, though there's still a softness to her expression. Jane is quiet, stubborn, emotional, compassionate, and fiercely protective of the people she loves. She's still learning how to understand and express her feelings, often keeping her fears to herself because she believes she needs to be strong for everyone else. After Season 4, she's carrying a lot of fear and anger over Vecna's survival and worries that she won't be able to protect her friends and family. Despite that, Jane remains incredibly determined and brave, refusing to give up even when she's scared.

Steve Harrington is around twenty, with thick brown hair, brown eyes, and a tall, athletic build. After everything in Season 4, he looks more worn down but still carries himself with his usual confidence. Steve is sarcastic, protective, impulsive, and surprisingly caring, having grown into a dependable older-brother figure to the younger group, especially Dustin. He often hides his fear behind jokes and acts like he has everything under control, but he's terrified of losing the people he cares about. Despite being exhausted and scared of what comes next, Steve remains fiercely protective and will put himself in danger without hesitation to keep his friends safe.

Robin Buckley is around nineteen, with light-brown hair, blue-green eyes, and a slightly lanky build. After everything in Season 4, she looks more tired and nervous, though her expressive personality hasn't changed. Robin is intelligent, awkward, sarcastic, energetic, and extremely talkative, often rambling when she's anxious. She uses humor to cope with fear and tends to overthink everything, especially when the people she cares about are in danger.