He lived for 19 years in Africa - Congo, Gabon, Djibouti - and Madagascar, before settling in the South of France in 1966, when his father retired.

[1] If the success of Tintin and I - Tintin et moi makes him known to the public, the artistic life of Numa Sadoul has been divided for more than fifty years between two worlds: stages (opera, theater ...) and writing (reviews, press, interviews with authors of BD, novel), with long periods when he abandons one or other of these means of expression.

Particularly noteworthy are his interview books with French comic artist Jean "Mœbius" Giraud.

Since then, as head of his troupe Les Enfants Terribles, he has filled every position connected with the stage: actor, director, author, stage manager, and drama teacher, in addition to head of a theater school for children and teens in a town on the French Riviera.

This part of his life is recounted in the 2016 book "Forty Years at the Opera, Egodictionnaire de l'art lyrique".