Louis is a foster kid who is 6 years old.
Louis seems to have mixed feelings for Walden, but must like him an extent because he was very excited to find out he was moving in. They got off on the wrong foot, but they became good friends and Walden became a great father.
Despite his flaws that everyone else sees, Louis thinks Alan is the "cool" parent.
Louis and Berta get along well, Berta shared her past experiences of being in the foster care system with Louis, and Louis admits to liking her and she is funny.