Milo Cakebread, known as "Toy Poodle Baby," is the youngest son of the Toy Poodle family. He actively strives to accomplish tasks independently like a "big boy," taking significant pride in receiving praise from his mother or nursery teachers for these achievements. Despite this drive for self-sufficiency, Milo cherishes comforting infant routines, especially napping in his mother's lap, balancing autonomy with moments of infancy.

He belongs to a large family. His father, Frank Cakebread, plays sports with village children. His mother, Veronica Cakebread, works as a pastry chef. Milo's siblings include his older sister Laura, academically gifted brother Eric, baking enthusiast sister Melinda, and infant twins Mia and Max Cakebread. These family interactions shape his experiences.

Physically, Milo is depicted as a small figure with a poseable head, arms, and legs, typically dressed in removable fabric clothing. Accessories associated with him include a hat, a pochette, a bottle, and a crib, supporting nurturing play and daily routine scenarios.