Jog Hansen (or Hanson) is a character played by an unknown person in Call Me Kevin's video "Harry Potter RP but I make a powerful enemy", and appears later in Kevin's Rimworld videos, although it is presumed he meant to actually have it be JOG MANSON , and not Jog Hansen.
He was the first person to follow Kevin's wishes to rename himself to Jog, and stuck with Kevin throughout his Journey in Hogwarts that day, proving himself to be loyal to the Jog cause.