Who is Teft, Lawrence Teft, III from Bless the Beasts and Children and what is their importance?

Teft is a charismatic delinquent with a long background of petty criminal activities. He comes from a privileged background, but is overburdened with high expectations of achievement, particularly from his father. He is smart and a good problem solver. He is tall and thin and is big for his age. He plays a key role in the quest as he is the one with the skills to steal a car and drive it.