Born in Montreal, Quebec, Canada. Catherine De Seve studied butoh dance in Japan with Kazuo Ohno. She then graduated with a degree in performance from the National Theatre School of Canada. She divides her time and versatile talent between French and English theatre, television, voice work and film. She made a name for herself in Quebec television with Sketch Show (Gemeaux Nomination for Best Actress in comedy). Since 2003, she has been part of the prime-time program L'Auberge du Chien Noir (Gemeaux Nomination for Best Supporting Actress), which is broadcast on the national channel SRC. On stage, among others, she played the Marquise de Merteuil in Dangerous Liaisons (Segal Centre at Saidye-Bronfman) and Stella in A Streetcar named Desire (Rideau Vert Theatre). She directed a short film, entitled Hidden Dance, which was produced by her company Catfou.