- Acting for Two:
- Mercedes and Delaila are both played by Estefany Oliveira.
- Jonathan José Quintana plays Droide and Miguel.
- Oso and Barba Negra are played by Gabriel López.
- International Coproduction: The series was a coproduction between RAI and Rainbow SpA in Italy and Nickelodeon and Cinemat in the United States.
- Multiple Languages, Same Voice Actor: Riccardo Frascari (JJ) and Blas Roca-Rey (Lorenzo) performed their on-camera roles in Spanish and re-dubbed their dialogue for the Italian dub.
- Real-Life Relative: Evaluna Montaner, who portrayed Eva, is the daughter of the show's composer, Ricardo Montaner.
- What Could Have Been: The lead female character was originally going to be named "Luca". However, after Evaluna Montaner was cast, she was renamed "Eva".
Trivia / Club 57