Skip to main content

The fan casting platform. Cast your favorite talent in movies, TV shows, and more.

Powered by

Browse

Stories
Talent
Tags
Community

Company

About
Fan Cast News
Contact
Privacy Policy
Terms of Use

Community

Forums
Add a Story
Help & FAQ

© 2026 myCast.io. All rights reserved.

/

/

Stories / Undertale / Napstablook / Casey Mongillo

Casey Mongillo

Casey Mongillo

Age: 38

non-binary

Casey Mongillo was born on October 22, 1987 in Bristol, Connecticut, USA. They are an actor, known for Red Dead Redemption (2010), Star Trek Online (2012) and Adventure at the Center of the Earth (2008). They occasionally join Rockstar Games (creators of Grand Theft Auto, Red Dead Redemption series) as a guest during their official live streams.

Fan Casting

Casey Mongillo

Casey Mongillo

as

Napstablook

Napstablook

for Napstablook in Undertale

Suggested by williamsapong

Undertale

Undertale

A human child has fallen into the Underground, a large, secluded region underneath the surface of the Earth, separated by a magic barrier.

Comments

Other Suggestions for Napstablook

Phyllis Smith

20

J.G. Quintel

20

Joaquin Phoenix

Joaquin Phoenix

54

Dan Mintz

21

Erica Schroeder

Erica Schroeder

10

Finn Wolfhard

22

Casey Mongillo as Napstablook - Undertale Fan Cast | myCast.io