Romain created the French animated series Code Lyoko and directed and provided character designs for the French-Japanese series Oban Star-Racers.
He also provided main mechanical and spaceship designs for both seasons of the television anime series Space Dandy.
The Tokyo-based French animator’s work on Oban Star-Racers caught the attention of Satelight director Shoji Kawamori.
Romain then created a team of French animators to provide designs for anime including Aquarion Evol, Bodacious Space Pirates, Croisée in a Foreign Labyrinth – The Animation , AKB0048, and Senki Zesshō Symphogear.