Who is Shecker, Sammy Shecker from Bless the Beasts and Children and what is their importance?

Shecker is the son of a famous comedian. He is obnoxious, loud-mouthed and has a persecution complex. He acts as if the world is against him and uses his Jewish background to further his self-imposed role as a victim. Shecker's family life is as dysfunctional as the other boys. His father travels a lot and is a habitual gambler. Shecker's father even uses Shecker in bets to his son's detriment. Shecker will try and do anything to please his father, even if he harms himself in the process.