Cloud Cumulonimbus is a prominent character in the anime series 'Yume no Crayon Oukoku' (The Crayon Kingdom of Dreams). He serves as one of the loyal companions to Princess Silver, supporting her on her quest to save her parents and restore peace to the kingdom. Cloud is known for his kind-hearted nature and ability to manipulate weather, often using his powers to help his friends overcome obstacles. His whimsical and sometimes absent-minded personality brings comic relief to the story.