Stranger Things Characters - Logic Puzzle

IMPORTANT! READ OR YOU WON'T KNOW WHAT TO DO! Welcome to the Stranger Things Characters Logic Puzzle! Each column should be labelled (from left to right): A, B, C, D, and E (JetPunk wouldn't let me do it). Each row should be labelled from top to bottom: 1, 2, 3, 4, and 5. Joyce is in A1. Most characters will then give you a clue as to where other characters are. It's up to you to logically deduce where each character is. There may be cases where there is more than one correct answer. However, one of those characters will be a much more important character than the others, and that's the answer. See the comments for a somewhat-useful hint.