Michael Sinterniklaas is an American actor, voice actor, ADR director and script writer who has provided voices for a number of English-language versions of Japanese anime films and television series, as well as video games at Central Park Media, 4Kids Entertainment, Bandai Entertainment, Media Blasters, Viz Media, Funimation and Tripwire Productions. He voices Nathaniel Kurtzberg/The Evillustrator in the English dubbed version of Miraculous: Tales of Ladybug & Cat Noir.
His most notable roles as a voice actor are Leonardo in Teenage Mutant Ninja Turtles (2003) and Dean Venture (and other small parts) in the Adult Swim cartoon The Venture Bros., Mikey Simon in the Nicktoons series Kappa Mikey, and as Deady in the 2011 Friday the 13th event of the online MMORPG AdventureQuest Worlds. He also replaced David Moo as Xellos in the English dub of Slayers Revolution and Evolution-R.
He is also a well known voice director, for a variety of shows like Berserk, Huntik: Secrets & Seekers, Kappa Mikey, Kurokami: The Animation, Magic User's Club, Mobile Suit Gundam Unicorn, Samurai Deeper Kyo, Slayers Revolution, Slayers Evolution-R, Let's Go! Tamagotchi!, Three Delivery, and The Venture Bros.