Diana

ダイアナ

Diana is one of the main villains in Jewelpet. She is a black Munchkin cat with white paws who can use the forbidden dark magic known as Dark Eyes Power. She wears a frilly pink waistcoat, a pink bow, and a silver heart-shaped necklace. She is Dian's younger sister, who was sealed by the Four Witches of Jewel Land many years ago due to her foolish acts. She was unsealed during the events of Episode 2 by the Phantom Thieves, who mistook her for the kitten they had found. Her mission is to defeat the Four Witches of Jewel Land and rule both worlds through her power. Although she can be snobbish, evil, and sometimes jealous of Rinko, her magic is strong. It can be distinguished by the black to purple colored paw mark on the victim, and it is cast on a human or object in which the Jewel Charms were hiding. This magic can be broken by someone confessing their weakness. She always lets her minions, the Phantom Herb Thieves, do her bidding in stealing the Jewelpets and collecting them to break the seal that keeps Dian imprisoned. But time and time again, she and the gang failed to get every single one of them. After the events of Episode 26, the Phantom Thieves betrayed her, and Diana went solo on collecting the remaining Jewelpets. But in the end, she successfully freed Dian from the Ice Prison. In Episode 52, she channeled her Jewel Power to the Jewel Stick along with the other Jewelpets and defeated Dark Dian. She opened her brother's heart to the truth that Jewelpets and Humans must co-exist in harmony and told him he has friends in Jewel Land to accept him and Diana. After that, they both changed their ways. She has a fear of bananas. Diana's name is based on Diamond, and her birthday is on April 20th.
Diana has a black version of the Jewel Pocketbook which she uses to identify which Jewelpet she will get. It was also used to unlock the Jewel Stick along with the one Rinko has.