Name: Elena Nickerson
A.k.a. princess Diamond
Age: 17
Birth Place: Paris, France
Birth date: 11 October
Sign: Libra
Guardian: the leopard
Planet:  Aquamarine
Eyes: Blue
Hair: Blue
Hairstyle: long  hair with odango (like chibi Usa)
Favorite colors: Blue and green
Favorite food: Pizza
Least favorite food: Tomato
Favorite subjects: History and Geography
Least favorite subjects: Math's, …
Her history:
Past:
Princess Diamond  was going to become the next queen of Aquamarine but she was too wild. She was never at the Royal Palace. Her mother told her that it was not the attitude of a future queen but she didn't care. She always wanted to have fun. One day she went to the Moon kingdom to see her friends but Metallia killed her the day of the great attack.
Present:
Elena comes from Europe! She moved to the U.S. when she was 10. Her father is a businessman; he's never at home. Her mother died when she was only 2 years old, she doesn't remember her. She has a gray cat called Galaxy; she speaks like a human. Elena is a cool girl; she likes to do some things that nobody do. She's a little bit crazy sometimes. She likes to sing and she would like to become a superstar.  She just moved to Tokyo. She doesn't like her new school because she doesn't have any friends. All the kids there think that she's weird.
Future:
Only Sailor Pluto knows it. We only know that she's going to be Queen Diamond of Aquamarine

Powers:

• Killer Wave Blast: an huge wave appears in her hands  and  surge  in a chaotic noise on the enemy.
  
• Ultimate Tsunami shock:  The enemy is  stuck in a massive whirlwind.
  
• Diamond dust: Many little piece of ice fall of the skies and froze the enemy