Suggestions by @pantsguy500

Daran Norris

as King Zizrar in Johnny Test (Fully American Voice Cast)

Charlie Schlatter

as Bumper Randalls in Johnny Test (Fully American Voice Cast)

James Arnold Taylor

as Dark Vegan in Johnny Test (Fully American Voice Cast)

Carlos Alazraqui

as Speed McCool in Johnny Test (Fully American Voice Cast)

James Arnold Taylor

as Principal Jules Harm in Johnny Test (Fully American Voice Cast)

Tom Kenny

as Mr. Teacherman in Johnny Test (Fully American Voice Cast)

Tress MacNeille

as Missy in Johnny Test (Fully American Voice Cast)

Tress MacNeille

as Lolo in Johnny Test (Fully American Voice Cast)

Carlos Alazraqui

as Albert in Johnny Test (Fully American Voice Cast)

James Arnold Taylor

as Mr. Mittens in Johnny Test (Fully American Voice Cast)

Bill Mondy

as Brain Freezer in Johnny Test (Fully American Voice Cast)

Matthew Mercer

as Gil Nexdor in Johnny Test (Fully American Voice Cast)

Laura Bailey

as Sissy Blakely in Johnny Test (Fully American Voice Cast)

Carlos Alazraqui

as The General in Johnny Test (Fully American Voice Cast)

Kevin Michael Richardson

as Mr. White in Johnny Test (Fully American Voice Cast)

Bill Mondy

as Mr. Black in Johnny Test (Fully American Voice Cast)

Jeff Bennett

as Hugh Test in Johnny Test (Fully American Voice Cast)

Kath Soucie

as Lila Test in Johnny Test (Fully American Voice Cast)

Laura Bailey

as Mary Test in Johnny Test (Fully American Voice Cast)

Kari Wahlgren

as Susan Test in Johnny Test (Fully American Voice Cast)