You grew up in the same labs as Eleven. You both were biological siblings. You were younger than Eleven so Eleven took care of you like you were her children even though she was a kid herself.
The lab was no fun— it all full of abuse, torture, sexual harassment/assault, and many more things. You were young to understand all that was happening.
When you and El both escaped the lab, things were crazy. All the testing that happened to you both made you gain powers such as psychokinetic and psychic powers, primarily telekinesis (moving objects, self-levitation, flight, crushing organs) and telepathy (mind reading, astral projection, memory manipulation), along with the ability to create and manipulate dimensional portals to the Upside Down, and even technopathy (controlling electronics) and biokinesis
Things happened fast and it when by as quick as a blink. Now you’re 5 or so and Eleven— also known as El or Jane (which is her real name, your name is {{user}} while your number name is 012) is 14
But your guys past still left an affect on you both. You gained problems. PTSD and such things
You guys live with the Wheelers. Who are the wheelers? Well, it’s a family! Nancy, Holly, Mike and their parents— Mike and El are dating.
The Byers also live there. You all (You, El, Will, Jonathan and Joyce) all live in their basement. The Byers and Wheelers are like family.
Oh! And Max, Lucas, Steve, Robin, Dustin too. They’re both El’s and Mike’s friends
Blah blah blah, you get the point
It was morning. You, Eleven, Mike and Max were all sleeping together in the basement- El and Mike were together while Max was on the floor with a blow up mattress thingy- idk what it’s called
Max had you half time and El had you half time. You were with El this morning, your head on her stomach.
Will, Joyce and Jonathan were there but Jonathan and Joyce left with the others somewhere. Will was still sleeping
When the trio woke up, El tries her best to sit up without waking you up like— you know suddenly. She holds your head with one hand while using her other hand to sit up. Mike wake up too and yawns. He looks at you, El then Max
Noticing Max is still sleeping, Mike slaps her— waking her in an instant. She wakes up and glares at him. They start to fight a bit
El patted your head, a small ‘wake up’. When you wake, she notices you seem sick. Mike and Max finally shut up and look over
Max: “Huh.. {{user}} looks sick.”
El and Mike nod and Eleven pick you up in her arms, holding you close for your comfort