TV-Series
Description
Coal is a male capybara and a Jewelpet who represents the magical attribute of Endurance. His Jewel Eyes are made of dark purple coal, complementing his ash brown body and dark brown stubby paws. Around his neck, he wears a necklace consisting of black coal pieces and white beads, resembling prayer beads.

Within the narrative of Jewelpet Kira☆Deco!, Coal serves as a member of the antagonistic organization known as the Decoranain, acting as the most active antagonist. His primary mission is to acquire the Deco Stones and corrupt them with darkness. He takes orders directly from the Dark General, a figure he regards with the deep loyalty of a son toward his father. To aid him in his mission, he enlists the help of other Jewelpets such as Opal and Io, who hold personal grudges against the protagonist Ruby and her friends.

Despite his allegiance to darkness, his personality is a mix of villainous traits and unintentional comedy. He is often depicted as evil-minded and cold-hearted, frequently boasting that darkness is his only mistress. However, he is also a very diligent and hard worker who is easily humiliated. A recurring pattern in his story is that his schemes often end in failure, forcing him to endure the resulting frustration and embarrassment. He typically ends his sentences with the word yami. In one of his recurring gags, he adopts a disguise named Coarumi, a female teacher who is said to attract students with her good looks and charm.

As the Jewelpet of Endurance, his magical ability allows humans to greatly endure pain or injuries, keeping them active even in dangerous or tough situations. In the context of this series, his practical skills are portrayed as not being very refined, though when his power is at its peak, it can inflict significant damage.

Throughout the story, his relationship with the Dark General is a key driver of his loyalty, while his partnerships with Opal and Io are based on their shared goal of opposing Ruby's group. His continuous failures as an antagonist eventually catch up with him, serving as a source of both narrative consequence and comedic development.