Ambrose Walnut is the baby brother of the Walnut Squirrel family, born on April 17. He is an energetic and playful character who delights in jumping around and splashing in puddles after it rains, though this habit often leaves his clothes muddy. Ambrose greatly admires his older brother, Ralph, and mimics his every action, aspiring to climb trees with the same skill. He views his father, Cedric, with a sense of wonder, believing him to be a magician because large inventions emerge from his carpentry workshop; this fuels Ambrose’s appreciation for magic tricks. In addition to his playful pursuits, he assists his parents with practical chores like wrapping and storing fruit and vegetables for winter. During the opening of a new supermarket and toy shop in Sylvanian Village, Ambrose joined other babies in excitement and enthusiastically took part in a game of running their own pretend store. He also appears in an episode focused on Mrs. Periwinkle’s birthday party. The character is often shown wearing a hat and a rucksack, and accompanied by a crib and a baby bottle.