Andy Botwin is hilarious.
He was the brother of Nancy's late husband and showed early in the series. While Andy often assists with the children, he's not really much more responsible than the kids themselves.
Andy has been thrown out of Rabbinical school, kicked out of the Army and started a business smuggling illegal aliens across the border. Why? All in the name of hooking up, naturally.
This Botwin also likes to do drugs.