Champions of the Mists
Champions of the Mists is a 1998 splatbook for the Ravenloft setting of Advanced Dungeons & Dragons 2nd edition. Intended as a source for "heroic characters" in the Demiplane of Dread, it provides a brief breakdown of how the different "archetype classes" (warriors, rogues, wizards and priests) approach heroism in Ravenloft, but it is largely focused on a combination of new kits and new heroic NPCs to serve as allies or patrons to the party or individual players.