Mast has been working on the web since he was a little 16-year-old punk (recently on “Watchmen 3″, French webcomics “L’Affaire DSK”, “Gonzoo” and “La Synthèse des Auteurs BD”).
He's a storyboard artist for Marvel digital line: the Infinite Comics.
He worked with Geoffo on "Amazing Spider-Man: Who Am I?", "Ultimate Spider-Man Infinite", "Iron Man: Fatal Frontier", "Original Sin: Secret Avengers", "Thanos: A God Up There Listening", "Captain America: Fear Him:" and more to come.
He's also the co-cartoonist of Jim The Duck's comic strips, from NBC's famous TV show Community.