Season 1+2
Season 3
Season 4
Season 5
Familiar Things (about Shree)
100

Boy who disappeared at the beginning.

Who is Will Byers?

100

Country that set up a bunker underneath the mall.

What is the Soviet Union(USSR)?

100
Main villain introduced in this season.

Who is Vecna?

100

Radio station that Steve and Robin work at.

What is the Squawk?

100

Which college did Shree attend?

BITS Pilani

200

Alternate dimension discovered in Season 1.

What is the Upside Down?

200

Mall that serves as the main setting.

Where is Starcourt Mall?

200

What year did Shree get married?

2000.

300

Dustin's pet demo-dog in season 2.

Who is Dart(D'Artagnan)?

300

Private investigator who assists Joyce and Hopper.

Who is Murray?

400

Real name of Eleven. 

Who is Jane Ives?

400
Name of Dustin's special radio that he uses to contact Suzie.

What is Cerebro?

500

Character who died at the end of season 2 to the Demo-Dogs. 

Who is Bob Newby?

500

Russian scientist who helps Hopper and Joyce after being kidnapped by them.

Who is Alexei(nickname Smirnoff)?

500

Third victim of the main villain of this season.

Who is Patrick?