Adam McArthur is an American actor and martial artist based in Los Angeles, California, United States. His best-known role is voicing Marco Diaz in the Disney XD cartoon Star vs. the Forces of Evil. He also voices characters on other animation shows and on-screen on some nationally aired commercials. In martial arts, he specializes in kung fu, has been a champion at some tournaments, and has been the featured subject of several documentaries that have aired on PBS.

KNOWN FOR

Star Wars: The Clone Wars
2011
Star vs. the Forces of Evil
2015
The Adventures of Puss in Boots
2015
Chibiverse
2024
Ollie & Scoops
2019
S.A.L.E.M.
2020
Star vs. the Forces of Evil: The Battle for Mewni
2017
Water Under the Bridge
2003
Homestuck: The Animated Series
2025
Motocross Kids
2004
Mike's Kooky Summer
2014
Man Eaters
2018

FILMOGRAPHY

All
Movies
TV
Acting
14
Crew
1
2025
Homestuck: The Animated Series
as Dave Strider (voice)
2024
The Pickup
as Joe
2024
Chibiverse
as Marco Diaz (voice)
2020
S.A.L.E.M.
as Oliver (Voice)
2019
Ollie & Scoops
as Rudy (voice)
2018
Man Eaters
as Frank
2017
Star vs. the Forces of Evil: The Battle for Mewni
as Marco Diaz (voice)
2015
Star vs. the Forces of Evil
as Marco Diaz (voice)
2015
The Adventures of Puss in Boots
as Chad (voice)
2014
Mike's Kooky Summer
as Mike
2011
Star Wars: The Clone Wars
as Prince Lee-Char (voice)
2004
Motocross Kids
as Male Reporter
2003
Water Under the Bridge
as Young Jake
Scooby-Doo! Spooky Camp Stories
as Counselor Coope