Kingdom Hearts Profiles
Official profiles of Aerith as she appears in the Kingdom Hearts series, released by SquareEnix. Any donations of translated profiles from around the world would be appreciated.
Kingdom Hearts
Profile as given in the Kingdom Hearts players guide by Piggyback.

This 22-year old also attempts to solve the mystery of the Heartless and the Key. Although she may possess a child-like innocence, Aerith is a brave and determined young woman. Having lost her world to the Heartless, she tries to help Sora as best she can.
Kingdom Hearts II
Group profile of some of the Final Fantasy guest characters, from the Kingdom Hearts II players guide by Piggyback.

The Hollow Bastion Restoration Committee features a team of famous characters from the Final Fantasy series. In the first Kingdom Hearts Sora encountered them in Traverse Town, where they were living in virtual exile.
Leon is actually Squall Leonhart from FFVIII, and has changed his name to distance himself with his past; his weapon is the notorious Gunblade. Aerith (Aerith Gainsborough, also known as "Aeris") and Yuffie (Yuffie Kisaragi) appeared in the seventh instalment of the series, Aerith played a pivotal (and tragic) part in FFVII's story, but has a particularly low-key role here. Cid, in the form he assumes here also hails from FFVII. Characters called Cid have long cropped up in all Final Fantasy games since FFII. There is even one in the film Final Fantasy: The Spirits Within.