Show:
Eleven
Mike
Will
Lucas
Dustin
100
What nickname does Mike give her?
Elle.
100
What's Mike's little sister's name?
Holly.
100
What did Will say to Joyce when about to take a bath?
"He likes it cold."
100
What does Lucas call Eleven after finding out that she knew where Will was?
A traitor.
100
What name did Dustin give the creature in his garbage can?
Dart.
200
What's the name of the lab that she was kept in for her childhood?
Hawkins Lab.
200
What character does Finn Wolfhard play in "It?"
Richie.
200
What's the message Will sends to his mom through the lights and the painted alphabet on the wall?

Run.

200
What is Lucas' little sister's name?
Erika.
200
What nickname does Dustin's mom give him?
Dusty.
300
List the season and episode number that Eleven gets adopted by Hopper. 
Season 2, Episode 9
300
Why does Mike get mad at Eleven after he fights with Lucas?
Because she tried to lead them away from the Upside Down/ Lab/ Portal.
300
Where was the first time Will had "flashbacks" of the Upside Down?
At the arcade.
300
What is the name of the game that Lucas lured Max in with at the arcade to talk to her?
PacMan.
300
What made Dustin's costume different about the others on Halloween?
He made his own Ghost Catcher box.
400
What is the place that Eleven goes to meet her sister, Kali (008) ?
Chicago.
400
What was the story Mike told to Will when trying to get rid of the Mind Flayer inside of him?
Something like this is okay:

Mike was in kindergarten all alone and he didn't know anybody. Will came over and asked if they wanted to be friends and that's how they became so close. 

400
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Why did Will's eyes turn from green to brown throughout the show?

To show that he was possessed.
400
What Goosebuster character does Mike and Lucas fight over during the Halloween costume incident?
Venkmen.
400
Who did Dustin ask to dance at the Snowball?
Stacey.
500
What is the first word Eleven says in the entire show?
"No."
500
What food product did Finn Wolfhard do a commercial for?
Hellman's Mayonassie.
500
What's the name of his dead beat dad?
Leslie.
500
What store did Caleb McLaughlin do a Christmas commercial for?
Old Navy.
500
What is the name of Gaten Matarazzo's disease in real life?

 cleidocranial dysostosis.