Robert Walker worked on animated TV shows such as The Raccoons and Dennis The Menace, hired by Disney Animation in 1989 he was responsible for scenes in feature films such as The Rescuers Down Under (1990), Beauty and the Beast (1991), Aladdin (1992), The Lion King (1994), Mulan (1998) and Lilo & Stitch (2002), and Brother Bear (2003) .