Acting · Colorado, USA Julius Callahan Biography Julius Callahan is an American actor best known for voice acting Lalo and Francois in Ratatouille. Acting The Marshmallow Mystery Tour Kierst 2021 Mercy for Angels Detective Finnegan 2015 Unemployed Father English (uncredited) 2008 Ratatouille Lalo / Francois (voice) 2007 Keeping Up with the Steins Mr. Trailer Park Habitant (uncredited) 2006 Novel Romance Beach Vagrant 2006 Mr. & Mrs. Smith Sebastian James (uncredited) 2005 Lemony Snicket's A Series of Unfortunate Events Davidious Augustine / Bohemian (uncredited) 2004 Agent-readable