Who is Lally 1, Stephen Lally, Jr. from Bless the Beasts and Children and what is their importance?

The eldest of the Lally brothers, Stephen, or Lally 1, has an intense sibling rivalry with his younger brother. He demonstrates sociopathic tendencies and is the laziest and most withdrawn of the group. His actions seem less motivated by togetherness with the boys than by a need not to be upstaged by his younger brother. Lally 1 acts grudgingly when he acts at all and nearly always in his own self interest.