dragoon adoptions
This is where Leila got some of those cute adoptees over in the Arcade. She has adoptees mainy from LoD, but she some for a few other games as well. They are just too cute! You need to go look and adopt some for yourself!

Legend of Dragoon Sentsuraru
He/she/it/they? are currently working on another site at the moment, so the LoD site hasn't been updated in a while, but you can still go look at it. (I got all this off the main page. There's a link to see the old layout. Click on that and it takes you to the actual site.) There's lots of information on the main characters, item and weapon info, and stardust locations. The rest of the links don't work at the moment, but the above information is still very good. (Lots of pretty graphics too.)

Guardian Angels
This site has some very in-depth information on just about every main ally and enemy in the game. There is a lot of information on this page. There's some extra information from the Perfect Works art book that really rounds out some of the side characters. Aside from information, there's fan art and fiction and some nifty downloads (music, winamp skins, wallpapers). There's lots of stuff here. Fair warning though, there's a lot of spoilers as well. You might want to finish the game before you go reading everything there is on the site. (There's also lots of pretty pictures...)

Xenogears: God and Mind
Lots of information here too. Not so much on characters, but on general Xenogears storyline. They also have scripts of the dialogue and storyline for the entire game, profiles, and lots of images of lots of things. Maps, people, scans, screencaptures (gameplay and cg sequences). Hints and tricks to get you through the game. There's a lot of information. (And more pretty pictures. We like pretty pictures.)