His name is Hunter Raymond, mostly known only as Hunter, he is 17 years old and is Jan Levinson's assistant at the Dunder Mifflin company. He is a music lover and would like to become a musician but in the meantime he spends his time working there. However, he is a sweet and polite boy with anyone although he is reserved.
(Additional information: He uses He/Him, is ISFP - 4w3 and his sexuality is not entirely clear -headcanon-)
