Growing up in the Wild West and raised on the exciting stories told by his father, Billy with his cowboy outfit has a burning desire to hit the trail! And since every new day offers an opportunity to go on an adventure worthy of the greatest cowboys, he is determined not to miss out… He takes with him his faithful friend Jean-Claude and his accomplice Suzie and off they go!
| Actor | Role |
|---|---|
| TTimothé BardeauBilly (voice) | Billy (voice) |
| HHannah VaubienSuzie (voice) | Suzie (voice) |
 Kaycie ChaseJean-Claude (voice) | Jean-Claude (voice) |
 Emmanuel JacomyScott (voice) | Scott (voice) |
 Cathy CerdaGrand-mère Hyda (voice) | Grand-mère Hyda (voice) |
| GGuy ChapelierJack / Foulafrousse (voice) | Jack / Foulafrousse (voice) |
 Keanu PeyranMarvin (voice) | Marvin (voice) |
 Thomas SagolsBison (voice) | Bison (voice) |
 Martial Le MinouxKurt / Biff / Julius / Blitz (voice) | Kurt / Biff / Julius / Blitz (voice) |
 Benjamin BollenGros Dur (voice) | Gros Dur (voice) |
 Nathalie HomsMaman de Gros Dur (voice) | Maman de Gros Dur (voice) |
 Arnaud LaurentRenard (voice) | Renard (voice) |
 Adeline ChetailAgatha (voice) | Agatha (voice) |
| EElisa BardeauOllie (voice) | Ollie (voice) |
 Véronique AugereauMme Utopia (voice) | Mme Utopia (voice) |
 Jérémy BardeauFennec (voice) | Fennec (voice) |
| JJean-Michel VaubienJessy Dog (voice) | Jessy Dog (voice) |
 Laurence BreheretMaman de Billy (voice) | Maman de Billy (voice) |