Who is Lally 2, Billy Lally from Bless the Beasts and Children and what is their importance?

Lally 2 is the heart of the group. He is also the youngest. He takes the plight of the buffalo to heart even more than the rest of the boys, so much so that he resolves to do something about it without even consulting them for aid. When despair takes hold of the group and action is required, it is Lally 2 that takes action and drives everyone forward. He doesn't have Cotton's leadership or Teft's know-how, but he has guts.