The Brony Truck Driver was a person in one of Mike's stories.
He drove in the truck with Mike in his first weeks of the job. He played J-Pop and MLP music during the whole ride. He was described as self-centered. Mike retold the events in a stream after it occurred.
He is considered to be one of the most important people in the streams, changed the dynamic forever, set forth a new age, one of the most iconic characters in the streams. truly.