Hi. I'm the daughter of Poseidon, and Percy's long lost sister. It's a pleasure to meet you. 

//BIRTHDAY\\
August 18
//AGE\\
One year younger than Percy.
//IMMORTAL PARENT\\
Poseidon
//SIBLING(s)\\
Perseus "Percy" Jackson
//ABILITIES\\
Same as Percy. 
//OTHER INFO\\
Percy met Perciana in the woods while Perciana was being chased by a robot bull. Percy saved her and led her to a camp, named Camp Half-Blood.