Not as clever as you. What I mean is, he looks up to you. He'll do anything you say. So there's a loyalty between these two which goes back years. They work well together.
Motto needs the adulation.
Pete enjoys the excitement. And each boy in a different way, has a difficult background which the other perceives and sympathizes with. Pete's father is killed when Pete is nine. He dies a hero's death, but he dies all the same. Motto's father relates to the office better than the family and his mother prefers to do charitable work for the really needy.