There's no way to describe "IT". Where did "IT" come from? The sea? The stars? Your backyard? What is "IT"?
Greaser
Police Officer
Narrator
Zombie Dog
Giant Robot
Surfer Dude
Demonic Cat
Agent
Only A Scientist
Soldier
Mrs. Jane Doe
Mr. John Doe
Drive-In Attendee #1
Drive-In Attendee #2
Drive-In Attendee #3