Juan is preceded in death by his aunt, Susana Mares and his uncle, Anthony Mares.
Juan is survived by Abundio Mares and Genoveva Gonzales Mares; his brother Alex Xavier Mares; sisters Breanna Mares and Lydia Losoya and fiancé Evelyn Borrego. Juan also leaves numerous of nieces, nephews and cousins as well as aunts and uncles.