Fancy Nancy Wiki
Fancy Nancy Wiki

Sean is an episodic character in Fancy Nancy. He’s Lionel's cousin who befriended Nancy in the season two episode "Nancy's New Friend".


He’s an autistic kid who has a passion for trains, being also a very good listener and observer, noticing everything around him, as seen when he talked to Lionel when they were going to Nancy's playhouse in his debut episode "Nancy's New Friend."

"He’s very cool because he sees the world in a whole different way," that’s basically what Lionel thinks and that’s why Lionel considers him his favorite cousin.

And about his likes and dislikes, he loves smooth peanut butter and doesn't like crunchy textures. Also, he can be very sensitive due to his autism and when it is too much, he runs away, but after a little quiet time and a talk to his mom, he comes back and ready to play!

Physical Appearance

Sean is a fair-skinned young boy who has dark brown hair, green eyes with thin eyebrows.

He wears a blue jacket, grey joggers and red running shoes.


Total appearances: 2.

*bold indicates larger role


  • He’s voiced by George Yionoulis who also, according to the Hollywood Deadline[1] article about the season two episode "Nancy's New Friend", inspired Matt Hoverman to make said episode because of his viral video "My Autism - By George.", where he explains to his fourth-grade class about his disability.
  • According to Matt Hoverman, Sean is the first animated character created by Disney to be explicitely autistic.


  1. Ramos, Dino-Ray. "Disney’s ‘Fancy Nancy’ To Spotlight Autistic Character For World Autism Awareness Day." Hollywood Deadline. Retrieved March 31, 2020
Nancy's Family Nancy ClancyJoJo ClancyDoug ClancyClaire ClancyFrank ClancyMargieJonathanGrammyPoppy
Recurring Characters BreeFreddyLionelMrs. DevineRhonda and WandaGraceMadame LucilleBrigitteGus
Episodic Characters Mrs. SinghMr. SinghKabirDaisyMeganSean
Animal Characters FrenchyPapillonWafflesFlashJewelJean-ClaudeJean-Claude Jr.Vanessa and SerenaFrittersPepperShellyParcel
Toy Characters MarabelleChiffonMr. MonkeyPenelope
Others Dudley