"Bon Bon the Birthday Clown" is the twenty-seventh episode of the Disney XD animated series Star vs. the Forces of Evil. It premiered on November 21, 2016 and it is the fourteenth episode in the second season.
Star has second thoughts about attending a dead clown's séance, when Jackie asks Marco to go to the school dance with her.
- Eden Sher as Star Butterfly
- Adam McArthur as Marco Diaz
- Abby Elliott as Janna Ordonia
- Grey DeLisle as Jackie-Lynn Thomas
- Jeffrey Tambor as Glossaryck
- Alan Tudyk as Ludo
- Artt Butler as Rafael Diaz
- Nia Vardalos as Angie Diaz
- Dee Dee Rescher as Miss Skullnick
- Jeff Bennett as Principal Skeeves
- Tom Kenny as Bon Bon
- This is the third half hour-long episode in the series, following "St. Olga's Reform School for Wayward Princesses" and "Storm the Castle".
- Tom Kenny, known for voicing the title character on SpongeBob SquarePants on Nickelodeon, Rabbit from "Winnie the Pooh" and Commander Peepers on "Wander Over Yonder", guest stars as the voice of Bon Bon.
- This episode marks the second season's winter finale.
- It is revealed by Jackie that Mrs. Diaz's first name is "Angie".
- Marco and Jackie share their first kiss in this episode.