11) His unwavering loyalty to his friends

Dustin has shown throughout Stranger Things how loyal he is to his friends and can go to any length to help them. In Season 1, when their bullies blackmail Finn Wolfhard's Mike to jump off a cliff or they will cut Dustin's teeth, Dustin asks Mike not to do what they tell him. Even when he is scared himself, he still doesn't want his best friend to die to save him, showing his bravery and strength in the face of impending danger.
Edited by Nimisha