Ruby

Ruby (ルビー Rubī) is a female Japanese White rabbit Jewelpet who represents Luck or Courage, and one of the three mascot characters of the Jewelpet franchise. She is the main protagonist among all of the Jewelpets in each series and the very first Jewelpet in the roster overall. She is also the most notable icon of the franchise.

Personality
According to the official website, Ruby is depicted as polite and tidy who loves to watch the cherry blossoms bloom.

In Jewelpet, Ruby is very air-headed, joyful, brash, happy and is a big troublemaker, who sometimes wants to go her own way, despite being told to stop at one place. She also acts like a little sister to her partner Rinko Kougyoku, but sometimes has a hard time handling her antics. Despite all of this, she and Rinko always settle their differences and help each other out.

In Jewelpet Twinkle☆, Ruby is a supportive type for the series' human protagonist, Akari Sakura. She is a curious and cheerful character who thinks positively. She also acts as Labra's older sister. Even when in the harshest of situations, Ruby would do anything to help Akari and never leave her alone. Unlike the first and later series, she has a really kind and sweet personality, contrasting her dumb and airheaded characteristic.

In Jewelpet Sunshine, Ruby has a more similar personality to her first series' counterpart, but with a bit of an edge to her because of her difficult relationship with Kanon.

In Jewelpet Kira☆Deco!, Ruby owns the Kira-Kira Shop where she keeps all her prized jewels, and also where she lets Pink stay in while acquiring the Deco Stones. She is very happy-go-lucky but dimwitted who loves sparkly things, such as Saury, a type of fish, and jewel stones. Ruby represents Lucky in this series, and her magic isn't very good.

In Jewelpet Happiness, Ruby is outgoing and a happy-go-lucky Jewelpet who helps out at the Jewelpet Café Happiness along with the other employees.

In Lady Jewelpet, Ruby is very air-headed and doesn't really know how to teach Momona the right things. She can't tell when someone is insulting her and takes it as a compliment instead. When in a panic, she does things on impulse and often hurries off to do what she has to do. However, Ruby still manages to be very optimistic.

In Jewelpet Attack Chance!?, Ruby has a lazy attitude who doesn't like to get things done. She also has a huge appetite for food than she does in the first series.