Name: Rei Ayanami
Birthday:  Unknown
Age: 14
Blood Type: Blue Pattern
Status: First child--pilot of Eva Unit-00
First Appearance: Episode 1

Rei is a quiet girl that keeps to herself.  Asuka mistakes this for being stuck up when she honestly doesn't know what emotions are.  The only person Rei speaks to is Gendou Inari--the man who created her, which accounts for her blood type.  She develops emotions throughout the series.  She is a dedicated Eva pilot.
1