"Sophomore Slump" is the second segment of the forty-second episode of Star vs. the Forces of Evil. It premiered on November 8, 2017 alongside "Demoncism", and is the second segment of the seventh episode in the third season.
Marco decides to put in a full effort to living life in the present on Earth.
- Adam McArthur as Marco Diaz
- Grey DeLisle as Jackie-Lynn Thomas
- Artt Bulter as Mr. Diaz
- Nia Vardalos as Mrs. Diaz
- Jackie breaks up with Marco on good terms and they remain friends.
- Marco leaves Earth to stay on Mewni for a while.