KAOS has invented a weather machine so Maxwell Smart and Agent 99 are called back into action to foil this evil plan.
| Actor | Role |
|---|---|
 Don AdamsMaxwell Smart | Maxwell Smart |
 Barbara FeldonAgent 99 | Agent 99 |
 Bernie KopellConrad Siegfried / Prof. Helmut Schmelding | Conrad Siegfried / Prof. Helmut Schmelding |
 Richard GautierHymie | Hymie |
| RRobert KarvelasLarrabee | Larrabee |
| KKing MoodyShtarker | Shtarker |
 Harold GouldNicholas Dimente | Nicholas Dimente |
 John de LancieMaj. Waterhouse | Maj. Waterhouse |
 Kenneth MarsCmdr. Drury | Cmdr. Drury |
 Steve LevittBeamish | Beamish |
 David KetchumAgent 13 | Agent 13 |
 Danny GoldmanDr. Denton | Dr. Denton |
| RRoger PriceHottentot | Hottentot |
 Rachelle Carson-BegleyLisa | Lisa |
| LLou FelderPresident | President |
| KKate SternDr. Godivar | Dr. Godivar |
 Jim AntonioMerriweather | Merriweather |
 Heather MorganTrudy | Trudy |