I have a crazy amount of MC's so I'm just going to choose randomly.
Flakepea: His only family is his wife, because he's one on the creators of the universe, but he considers the rest of the Elementals (the creators of the universe) like his family, too. Oh, and he and his wife are close.
Crover: He was an orphan until his older sister married into an enormous family (14 people). In 3000's families are highly valued. Also he is close with his family. His girlfriend is his sister-in-law (That's legal. I checked) and his best friend is his cousin.
Hobbes: His only family is his twin sister and since they have been orphans as long as they can remember, they consider the orphanage owners like family.
Anders: His family consists of his wife and two kids. He is close with all of them, especially his daughter.
Arthurette: Her family used to consist of her parents and her brother and sister, but her parents were killed by a robot, so now her older brother raises her and her younger sister. They are the closets sibling set I have ever made.
Is your MC a good cook or not? Sorry if this question's already been asked.