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Version 1

Agent Otto as Johnny Test

Agent Otis as Dukey

Agent Olive as Susan

Agent Olympia as Mary

Ms. O as Sissy (both bossy)

Oscar as Johnny's dad

Oona as Johnny's mom

Odd Todd as Bumper Randall's

Version 2

Agent Olive as Johnny

Agent Otto as Dukey

Oscar as Susan

Oona as Mary (both scientists)

Agent Olympia as Johnny's mom

Agent Otis as Johnny's dad

Odd Todd as Mr. Mittens

Noisemaker as Albert

Shapeshifter as Sissy

Version 3

Oscar as Johnny

Agent Olaf as Dukey

Agent Otto as Gil

Agent Olive as Susan

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