Leo San Juan, an insecure child of nine years old, lives eternally frightened by horror stories that Nando tells his older brother. Within these stories it is 'The Legend of Nahuala', according to which, an old abandoned Casona is possessed by the spirit of an evil witch known as the Nahuala.
| Actor | Role |
|---|---|
 Fabrizio SantiniLeo San Juan (voice) | Leo San Juan (voice) |
 Martha HigaredaXochitl (voice) | Xochitl (voice) |
 Andrés BustamanteDon Andres (voice) | Don Andres (voice) |
 Jesús OchoaSantos (voice) | Santos (voice) |
 Rafael InclánAlebrije (voice) | Alebrije (voice) |
 Ofelia MedinaNahuala (voice) | Nahuala (voice) |
 Manuel ValdésLorenzo Villavicencio (voice) | Lorenzo Villavicencio (voice) |
 Mayté CorderoTeodora Villavicencio (voice) | Teodora Villavicencio (voice) |
 Bruno CoronelNando San Juan (voice) | Nando San Juan (voice) |
 Pierre AngeloCiego | Ciego |
 Germán RoblesFray Godofredo | Fray Godofredo |
 Luna ArjonaNana Dionisia | Nana Dionisia |
| MMaria SantanderToñita Sanjuan | Toñita Sanjuan |