Trevor’s father is an architect who has “come down in the world” and his mother considers herself better than the neighbors.
Trevor, also known as T., takes over the gang from Blackie. At first, they do not make fun of him even though everything about him means they usually would. This is one of the reasons his name gets shortened to T.
He never wasted a word even to tell his name until that was required of him by the rules.
T has “an odd quality of danger” and exists in a “brooding silence.” At first Blackie does not consider him a threat, because he does not seem to talk. He even tries to keep him in the gang when he first mentions Old Misery’s place. When T suggests destroying the house, Blackie loses control and the gang aligns with T.