Brian was born to Bronwyn and Jeremy Jefferson in 1978. Brian was a very large child, and very strong. He broke most of his toys as a baby and broke his crib as well. As a child, Brian had an ability to knock children down at incredible force. His parents saw this as a hint that Brian could be a good rugby player.
At age 19, Brian was given a scholarship to a rugby university in Wellingsim, New Zeland. Brian went to the school and became very rich after playing for one of the top teams in the nation.