Who is Dominic from Penny from Heaven and what is their importance?

Dominic is Penny's favorite uncle. He is a handsome man who most claim looks just like Penny's father did. He has dark hair and brown eyes and is a bit of a hermit and considered by most to be an eccentric. He always wears his slippers, even when he goes to work. He lives in a 1940 Plymouth Roadking parked beside the house, and every winter he goes to Vero Beach in Florida. He loves baseball, and his favorite team is the one he affectionately calls Dem Bums - the Brooklyn Dodgers.