As previously reported, Burrell will play the role of Mr. Peabody, with Max Charles and Sherman. Colbert will play Mr. Peabody's nemesis Paul Peterson, with Ellie Kemper as Paula Peterson, and Ariel Winter as Penny Peterson. Janney will play Mrs. Grunion. Stephen Tobolowsky will also lend his voice to the film.
Mr. Peabody & Sherman, a DreamWorks Animation feature, is directed by Rob Minkoff, from a script by Craig Wright, with revisions by Michael McCullers.