Etienne Moussou was born in Ulm in 1998 and grew up there bilingually as a half-Argentinean. In addition to German and Spanish, he also learned Swabian. After acting in various plays in his school days and graduating from high school with a degree in theater, among other subjects, he crossed Patagonia on a bicycle. He then began his acting studies at the Academy of Performing Arts Bavaria in 2020, which he completed in 2024, majoring in singing and children's theater. Already during his training, he participated in various children's and evening theater productions at the Akademietheater, as well as at the Theater Regensburg. He was also able to gain experience in front of the camera through camera acting lessons and short film productions at the TH Deggendorf.