Julien Petersen, aged 9, lives in Fontainebleau, Île-de-France, near Paris. Fluent in French, American English, and with basic Chinese, he's a versatile performer. Julien's education includes courses at Ecole Bilingue Leonard De Vinci, private acting classes from teachers trained at FonAct, and theatrical courses in Paris. He also studies music at École de Musique La Tête en l'Air, mastering the guitar and piano.

Active in sports like tennis, basketball, and swimming, Julien's creative skills extend to drawing and performance interpretation. His acting career features roles in films such as "Judas" (2024), "Cet enfant-là" (2024), "Ma Langue au Chat" (2023), and "Le Rêve Américain" (2022).

A promising young star, Julien's artistic journey is marked by a blend of dynamic education and early professional experiences.