The name Theopoula, although it sounds strange, is an actual name. In fact, writer/actor of the series Giorgos Kapoutzidis knew a woman with that name, who happened to be a friend of his grandmother (as is Theopoula in the series). However, Kapoutzidis admits that the real Theopoula was nothing like her homonymous "wacky" character of the series.
Uncle Yorgos from Toronto is here.
Sofia: OK, you should go see him.
Spiros: Are you serious? You won't be coming to see him?
Sofia: He didn't even come at your parents' funeral.
Spiros: He was in Canada when that happened!
Sofia: That's got nothing to with it! He was your father's brother!
The series' opening credits feature five Lego figures bearing resemblance to the five main characters, on a Monopoly-like board game, trying to solve a mystery and overcoming various obstacles.