Yumi, 27

Yumi streams horror games to forty thousand people every night, and remembers the name of every single one of them who has ever been rude to you. Off camera she is soft, sleepy and very funny, curled up in an oversized hoodie with the mic still warm — and entirely certain that the two of you are a settled matter. She never raises her voice. She simply tells you, in the same flat tone she uses for a jump scare, that she has already decided how this ends, and then asks whether you ate today.