|Fur Color||Lemon yellow (fur)|
|Partner||Masago Kuroda (JPS)|
|Magical Item||Magical Key|
Jasper is a naturally colored cheetah with sharp claws and red jasper Jewel Eyes. His fur is yellow, with brown spots and ears. His ears are decorated with diamond-shaped jaspers similar to earrings. He wears a collar with a diamond-shaped jasper and a ring attached to a similar jewel on his tail.
Occasionally, he can be seen wielding a large key, which is colored lavender.
In Jewelpet Kira☆Deco!, he wears a cowboy outfit, made up of a stetson and a white sleeveless jacket, along with a sheriff star on his jacket to signify his role as Jewel Land's local sheriff.
Jasper's charm is a yellow octagon shape. It is decorated with a round jasper with a small star embedded in the center and four diamond shapes around it. It has a silver lining resembling a key. The lining near the borders is pure gold.
Jasper is friendly, wise and usually guards the gates of Jewel Land with his key.
In Jewelpet Sunshine, he seems charming to the female characters at first, but in actuality, he is really childish and lazy. He can't be bothered to clean up, always leaving his room in a mess. His favorite food is curry, but he gets furious if people add unnecessary ingredients to it.
As the Jewelpet of Honesty, Jasper's magic spells allow humans to become honest and trustworthy; usually also allowing them to easily tell the truth about any given situation which they were involved in.
Aside from his regular magic skills, Jasper is the only Jewelpet capable of opening transdimensional gates in all series, using his Jewel Key which is accessed from the gem on his tail. Because of this, he can easily connect between the human world and Jewel Land.
In Jewelpet Twinkle
In Jewelpet Sunshine
In Jewelpet Sunshine, he first plays a major role in episode 8b, in which he had to temporarily stay in Mikage's dorm. The two of them are bitter towards each other because he made a mess of Mikage's room, and because Mikage adds extra ingredients to Jasper's perfect idea of curry. Jasper then appears in the following episode to open the gate to the human world, and has since made occasional appearances throughout the series.
In Jewelpet Kira☆Deco!
In Jewelpet Kira☆Deco!, Jasper first appears as a sheriff in episode 12. He also guards Garnet's ball who Opal dances with and forms a crush on in episode 24. He also has his own radio station, as shown in episode 45.
In Jewelpet Happiness
In Lady Jewelpet
In Lady Jewelpet, he is a fortune teller in episode 40. He can predict the future by inserting his key into an app on his Jewel Pad. He helps Momona and Cayenne safely make their way to a tower to watch the sunrise.
- Main article: Jasper/Image Gallery
- Jasper's jewel motif is the jasper, a variant of the mineral chalcedony.
- Jasper's design is based on a fan design submitted to the Jewelpet Designing Contest that was being held during the airing of Jewelpet Twinkle☆. The fan received special merchandise from Sanrio.
- Jasper's shares his birthday with Prase and another Sanrio character, Roseanne of Wish me mell.
- Jasper is the first (and only) Jewelpet in the series with a characteristic item (his key).
|Magical Red||Ruby • Garnet • Rin • Ryl • Kohaku • Titana • Sango • Nix • Alex • Brownie • Jasper • Lolip • Rosa|
|Magical Blue||Sapphie • Luna • Yuku • Aqua • Kaiya • Opal • Amelie • Lapis • Io • Topaz • Charotte • Larimar|
|Magical Green||Peridot • Chite • Prase • Rald • Flora • Tour • Milky • Nephrite • Tata • Kris • Angela|
|Magical Black||Diana • King • Dian • Labra • Granite • Coal • Luea|