<Ul> <Li> Ty Burrell as Mr. Peabody, a talking intelligent young dog, business titan, inventor, scientist, Nobel laureate, gourmet chef, and two - time Olympic medalist </Li> <Li> Max Charles as Sherman, Peabody's seven - year - old adopted young boy </Li> <Li> Ariel Winter as Penny Peterson, Mr. and Mrs. Peterson's daughter and Sherman's classmate </Li> <Li> Stephen Colbert as Paul Peterson, Penny Peterson's father and Patty's husband </Li> <Li> Leslie Mann as Patty Peterson, Paul's wife and Penny's mother </Li> <Li> Allison Janney as Edwina Grunion, the bigoted and stocky Children's Services agent </Li> <Li> Stephen Tobolowsky as Principal Purdy, the principal of Sherman's school </Li> <Li> Stanley Tucci as Leonardo da Vinci </Li> <Li> Patrick Warburton as King Agamemnon </Li> <Li> Zach Callison as King Tut </Li> <Li> Dennis Haysbert as Judge </Li> <Li> Leila Birch as WABAC </Li> <Li> Karan Brar as Mason, one of Sherman's friends </Li> <Li> Joshua Rush as Carl, another one of Sherman's friends; he also wears glasses and is seen in a wheelchair </Li> <Li> Thomas Lennon as Italian Peasant #2 </Li> </Ul> <Li> Ty Burrell as Mr. Peabody, a talking intelligent young dog, business titan, inventor, scientist, Nobel laureate, gourmet chef, and two - time Olympic medalist </Li> <Li> Max Charles as Sherman, Peabody's seven - year - old adopted young boy </Li> <Li> Ariel Winter as Penny Peterson, Mr. and Mrs. Peterson's daughter and Sherman's classmate </Li>

Who is the voice of sherman in mr peabody