Richard Steven Horvitz
2
Movies
5
Series
Movies
7.4
Ben 10: Secret of the Omnitrix
2007
as Grey Matter / Stinkfly Prisoner (voice)
Web Series
6.9
Series
The Angry Beavers
1997
as Daggett (voice)
8.5
Series
Invader ZIM
2001
as Zim (voice)
7.9
Series
The Grim Adventures of Billy and Mandy
2001
as Billy (voice)
8.2
Series
Ben 10
2005
as Grey Matter (voice)