Ethan Samuel Slater (born June 2, 1992) is an American actor, singer, writer, and composer known for his role as SpongeBob SquarePants in the musical of the same name, for which he received a Tony Award nomination and won a Drama Desk Award in 2018.
He most recently played the Historian, Prince Herbert, and others in the 2023 Broadway revival of Spamalot at the St. James Theatre. On screen, he appeared in a few guest roles in various television series before landing his first major film role as Boq in the two-part film adaptation of Wicked (2024-2025).
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Known For

Wicked: For Good
Boq
2025

Making Wicked
2024

Wicked
Boq
2024

Defying Gravity: The Curtain Rises on Wicked
Self
2024

Lost on a Mountain in Maine
Henry
2024

Elsbeth
Officer Reese Chandler · (2 episodes)
2024

I'm "George Lucas": A Connor Ratliff Story
Self
2024

These Untold Secrets
2023

The Jennifer Hudson Show
Self · (1 episode)
2022

Intervenors
Miles
2022
The Designer

Broadway Whodunit
Seth · (1 episode)
2020

Stars in the House
Self · (1 episode)
2020

The SpongeBob Musical: Live on Stage!
SpongeBob SquarePants
2019

The Kelly Clarkson Show
(1 episode)
2019

Fosse/Verdon
Joel Grey · (1 episode)
2019

The Marvelous Mrs. Maisel
Steven · (1 episode)
2017

Evol
Ronny Goldstein
2016

Lightning Bugs in a Jar
Ben
2015

Newsworthy
Tad Michael Cooper
2011

Law & Order: Special Victims Unit
Riley Porter · (1 episode)
1999