Full cast of Johnny Test

Scott McNeil

Mr. White / Bumper (voice)

239 episodes

Bill Mondy

Mr. Black (voice)

235 episodes

James Arnold Taylor

Johnny Test (voice)

234 episodes

Maryke Hendrikse

Susan Test (voice)

234 episodes

Lee Tockar

The General / Bling-Bling Boy (voice)

234 episodes

Ian James Corlett

Hugh Test (voice)

234 episodes

Kathleen Barr

Lila Test (voice)

234 episodes

Louis Chirillo

Dukey (voice)

130 episodes

Ashleigh Ball

Mary Test (voice)

104 episodes

Trevor Devall

Dukey (voice)

104 episodes

Brittney Wilson

Mary Test (voice)

81 episodes

Andrew Francis

6 episodes

Richard Newman

3 episodes