Leon is a friend of Luke Dunphy's.

In "Aunt Mommy", he and Luke try to reanimate a dead squirrel, which makes Claire to feel stressed because she has a lot of other problems, but later, Alex forbids them to do it.

In "Planes, Trains and Cars", he is seen with Luke and their school partners talking about the soccer game they have just played. Leon also tells Luke that there's a girl, Olivia, who always watches Luke when he plays. Luke believes that she is in love with soccer, but she has actually a crush on him.

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