: Animators developed a system that allowed characters to have extra limbs during fast movement, mimicking traditional 2D animation "smears" for added energy.
: Originally, Robert Downey Jr. was signed for the role but was replaced by Burrell in 2012 due to scheduling conflicts. Burrell was selected because his voice balanced Peabody's intellect with a modern sense of warmth.
The film’s visual style, led by production designer David James, was heavily influenced by and the UPA animation style of the 1950s and 60s. This was reflected in everything from the characters' clean silhouettes to Mr. Peabody’s sleek Manhattan penthouse. 5. Release and Performance
: Software was updated to simulate the light distortion caused by the characters' glasses, allowing for more accurate posing during the animation stage rather than waiting for lighting.
Mr. Peabody & Sherman - The JH Movie Collection's Official Wiki