Native from Brittany (Western France), Marinelly Vaslon studied foreign languages - English, German and Spanish - before moving to Paris to enrol in drama school. She attended Lesley Chatterley's Acting in English course, then joined Eva Saint Paul's theatre school for 4 years.

She made her acting debut in 2011 in The Egg, a play by Félicien Marceau, while setting up her own theatre company: Boss'Kapok, with fellow actress Joyce Franrenet, allowing more than a dozen of plays to come to life.