Ernesto Larkin is Theresa's brother. He is Alex, Max and Justin's uncle. He does not know about the Russo’s magical powers. Uncle Ernesto was mentioned in the episode "Justin's Little Sister" (season 1) when Theresa mentioned that Justin looked like Uncle Ernesto.
Justin's Little Sister [mentioned]
Ernesto Larkin is Potrayed By: Wilmer Valderrama the voice of Handy Manny another TV show on Disney Channel