Cloud is a central character from The Marshmallow Times, recognized as a sheep-like creature who serves as the companion and pet to the main protagonist, a girl named Sandy. His background is unusual, as he is not an ordinary animal but a living doll. He originated as the Wake-Up Cloud doll, a stuffed toy based on the mascot character of Cloud Cereal. Sandy won him in a contest, and shortly after coming into her possession, he mysteriously came to life and was welcomed into her family.

In terms of personality, Cloud behaves very much like a young child. He is innocent, cheerful, and always eager to help those around him. His defining trait is his extreme optimism, which fuels his primary motivation to be useful to his friends and family. However, this eagerness often leads him to take on more than he can handle, a habit that frequently lands him in trouble and can be a source of frustration for his adoptive sister, Sandy.

Within the story, Cloud takes on the role of a loyal companion. He is always by Sandy's side as she and six other children Jasmine, Lime, Basil, Clove, Nuts, and Cinnamon form a journalism team to report on events and have adventures in their world. His most significant relationship is with Sandy, who acts as his primary caretaker and sibling figure. The dynamic between his well-meaning but troublesome nature and her more level-headed personality is a recurring aspect of their interactions. While he is a member of the larger group of friends, a detailed account of his specific relationships with each of the other six children is not documented.

Information regarding a specific character arc or personal development for Cloud over the course of the 52-episode series is not available. Similarly, outside of his origin as an animate object, Cloud is not documented as possessing any special abilities or powers beyond his capacity for speech and movement, functioning as a unique and sentient member of the group.