Suggestions by @tylerjohnson1
419 suggestions
Clancy Brown
as High Override in Ben 10: Experiment Crew
Troy Baker
as Shock Rock in Ben 10: Experiment Crew
Jenny Slate
as Helen Wheels in Ben 10: Experiment Crew
Tim Allen
as Phil Billings in Ben 10: Experiment Crew
Michael Keaton
as Principal Edward White in Ben 10: Experiment Crew
Audrey Wasilewski
as Serena in Ben 10: Experiment Crew
Ron Perlman
as Bellicus in Ben 10: Experiment Crew
Roger Craig Smith
as Alien X in Ben 10: Experiment Crew
Joseph Gordon-Levitt
as Magister Patelliday in Ben 10: Experiment Crew
Tom Hanks
as Constantine Jacobs in Ben 10: Experiment Crew
Wendie Malick
as Myaxx in Ben 10: Experiment Crew
Jane Krakowski
as Myaxx in Ben 10: Experiment Crew
Lewis Black
as Azmuth in Ben 10: Experiment Crew
Gary Oldman
as Azmuth in Ben 10: Experiment Crew
Mark Hamill
as Psyphon in Ben 10: Experiment Crew
Alan Tudyk
as Psyphon in Ben 10: Experiment Crew
Yuri Lowenthal
as Vilgax in Ben 10: Experiment Crew
Diedrich Bader
as Rook Blonko in Ben 10: Experiment Crew
Bill Fagerbakke
as Cannonbolt in Ben 10: Experiment Crew
Carlos Alazraqui
as Grey Matter in Ben 10: Experiment Crew