Meiken Cheese is a light brown dog with distinctive short rabbit-shaped ears and a dark brown tail tip. He lives at the bakery after Anpanman rescued him as a starving, crying puppy found alone in the forest during Anpanman's first patrol; Anpanman shared part of his own head to feed the puppy, forging an inseparable bond and making Cheese a permanent bakery resident.

Known as a "wise dog," Cheese understands human language perfectly though he communicates primarily through barks; other characters grasp his meaning through mutual rapport. Highly intelligent, he performs tasks alongside others, assisting in bakery operations, patrols, and detecting SOS signals. His personality mixes comic relief with bravery: often over-dramatic, silly, and lazy about chores, yet courageous enough to charge into danger supporting Anpanman and frequently carrying Anpanman's replacement heads. He possesses a notably large appetite, consuming food hungrily.

Cheese has exceptional hearing and a powerful sense of smell, enabling him to track scents to locate individuals. Originally depicted walking on all fours, he now primarily moves bipedally but retains typical canine sitting and sleeping postures. He resides in a loaf-shaped doghouse outdoors.

Appearing consistently across the franchise as a supporting character, including in the film "Soreike! Anpanman: Tobase! Kibō no Handkerchief," his role aligns with his established traits. His broader background includes a girlfriend named Rare Cheese, while official materials confirm his breed origins remain unresolved.