Name: Samantha Jackson
Nickname: Sam/ Water Girl
Age: same as Percy's
Species: Half Blood
Gender: female
Related to: Percy Jackson (they're twins)
Lives: in the Poseidon Cabin with Percy
Looks:

Personality: extremely shy around people except for her friends and family
Crush: open (to lazy to think)
Weapons: two swords
Sexuality: bisexual but in denial
Likes: training with Percy, talking to her father, being in the ocean/water
Dislikes: seeing her brother/anyone hurt
Other: loves her brother and if anything ever happens to him she will die
People she hates: Luke
People who hate her: Luke and Clarisse
Favorite color: sea green
Favorite food: salads (she's vegetarian)
Favorite drink: lemonade

She doesn't feel special because she didn't get to do anything her brother did and feels that their father loves Percy more.