Alfonzo has curly brown hair, large circular black-rimmed glasses and tan skin. He wears a blue and white-striped shirt, brown shorts and olive sandals. In season 3, he has a thin mustache.
Alfonzo is a fun-loving individual who is usually seen hanging out with Ferguson. While not yet deeply explored as a character, he appears to enjoy Ferguson's eccentric antics and has fun during school events like pep rallies. He and Ferguson show no hesitation at the opportunity to travel to another dimension in "Pixtopia". In the same episode, unlike Ferguson, he marries the Pixie Empress, seemingly without issue.
- Star vs. the Forces of Evil Theme Song (season 1)
- Match Maker
- School Spirit
- Monster Arm
- Brittney's Party
- Mewnipendance Day
- Interdimensional Field Trip
- Mr. Candle Cares
- Red Belt (dream)
- Starstruck (cameo)
- Naysaya (cameo)
- All Belts are Off (cameo)
- Collateral Damage (cameo)
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- In "Pixtopia", Alfonzo is crowned king of Pixtopia through his marriage to the Pixie Empress. However, he returns to the regular supporting cast as of "Mewnipendance Day".
- Alfonzo's last name is revealed to be Dolittle in Star and Marco's Guide to Mastering Every Dimension.
- Also according to the book, Alfonzo might still be married to the Pixie Empress.
- According to Daron Nefcy at Creativa Fest 2017 in Mexico, Alfonzo and Ferguson were created as a requirement by Disney Television Animation executives because they wanted Marco to have male friends. Afterward, Nefcy didn't know what to do with them, so she ignored them. However, they were involved in more stories in season 3. They also returned again in "Britta's Tacos".
- Star and Marco's Guide to Mastering Every Dimension by Dominic Bisignano and Amber Benson. March 7, 2017. Published by Disney Press. Page(s) 58. ISBN: 978-1484774199.
- Disney TV Animation (2017-05-22). Star Vs The Forces Of Creativa Fest 2017!. Tumblr. Retrieved on 2017 May 26.