Message Boards

Advent Destiny
A forum-based, novel-type role playing game set in the Gundam Seed universe.
http://www.adventdestiny.com/

Every Anime RPG
Members take on the persona of their favorite anime character in a message board style RPG.
http://www.angelfire.com/anime2/everyanimerpg/

Gaia Online Community
General anime, manga, and video game discussions as well as a links database and a fan-art gallery. Lets members create and customize characters to represent themselves.
http://www.gaiaonline.com

Trilogy Star Anime RPG
Role playing message boards from a variety of series.
http://www.angelfire.com/anime2/trilogystar/index.html