- Stan as Numbuh 1
- Steve as Numbuh 2
- Francine as Numbuh 5
- Hayley as Numbuh 362
- Roger as The Kid
- Klaus as Numbuh 4
- Scott Tenorman (From South Park) as Heinrich Von Marzipan
- Ben Diskin - Stan Smith and Steve Smith
- Cree Summer - Francine Smith
- Rachael MacFarlane - Hayley Smith
- Carlos Alazaraqui - Roger
- Dee Bradley Baker - Klaus Heissler and Scott Tenorman
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