Stranger Things OC's
BONNIE SINCLAIR Oldest of the Sinclair siblings. She loves both her siblings but High School studies, cheerleading, dance and being popular doesn't leave much room for her to be especially close with them.
CASSANDRA BYERS Middle Byers sibling, was a surprise accident baby and is frequently called Jonathan's Twin (even though they are Irish twins). She is close to both her brothers and loves them more than anything.
CLAUDIA HENDERSON Dustin's older half-sister, he thinks she's awesome and she agrees. They are quite close and very similar, sometimes she feels more like a mother to him (especially cause there's is pretty absent) but she tries to not let that drive them apart.
DAWN HARGROVE Billy's younger sister and Max's older step-sister. She wants to get closer to Max but that kid is quite stubborn and standoffish. She was inseparable with Billy as kids, but with the abuse and new town she fears they are growing apart.
NUMBER 009 Jane's older 'sister', she also grew up in the lab with powers but her's are very different. She and Jane are quite close and bonded through their shared trauma and upbringing.
MARIA WHEELER
The oldest Wheeler sibling, only a year separates her and Nancy but with how different and distant they are it feels like a lot more. As little kids Maria and Nancy were very close, but as often happens in later years they have grown apart. She loves Mike but he's reached a phase where he's 'too cool' to have her around, and Holly is a bit young for them to have an actual bond.