Ethan Diaz is a main character in Stuck in the Middle. He is portrayed by Isaak Presley. He is the third oldest in the Diaz family.
- He apparently has had all of Harley's friends fall in love with him, then he forgets the date, and they lose friendship.
- He and his dad run the neighborhood Halloween Hang.
- He plays guitar.
- He is a big quitter.
- He is good at editing and making movies,
- He wants his younger brothers (Lewie and Beast) to be proud of him.
- In the intro, he is playing his electric guitar, which rings in Harley's ears and makes her go outside. Later in the intro, he is playing with his brothers.
- He thinks Harley has a big role in the family.
- He gets annoyed easily.