Julius Caesar plans on kidnapping Getafix but Asterix and Obelix save him. Whilst attempting to scatter the attackers, Obelix accidentally strikes Getafix with a menhir, the impact of which causes amnesia and forgets the recipe of the magic potion.
| Actor | Role |
|---|---|
 Jean-Claude DondaAstérix (voice) | Astérix (voice) |
 Guillaume BriatObélix (voice) | Obélix (voice) |
 Bernard AlanePanoramix (voice) | Panoramix (voice) |
 Serge PapagalliAbraracourcix (voice) | Abraracourcix (voice) |
 Barbara BerettaBonemine (voice) | Bonemine (voice) |
 Yves-Henri SalerneCétautomatix (voice) | Cétautomatix (voice) |
 Gérard SurugueOrdralfabétix (voice) | Ordralfabétix (voice) |
 Arnaud LéonardAssurancetourix (voice) | Assurancetourix (voice) |
 Laurent MorteauAgecanonix (voice) | Agecanonix (voice) |
 Philippe SpiteriJules César (voice) | Jules César (voice) |
 Antoine SchoumskyPetitbonus (voice) | Petitbonus (voice) |
 Xavier FagnonPeupaplus (voice) | Peupaplus (voice) |
 Christophe LemoineLégionnaire (voice) | Légionnaire (voice) |
 Jérémy PrévostIdéfix (voice) | Idéfix (voice) |