The Faun is one of the 10 races avaliable for play. It can be unlocked by killing special enemies, which sometimes will drop throphies. If playing with the Adventurer class, the throphy will have a 100% chance of unlocking any class & race, which may be the Faun or any other race not already unlocked. If playing with another class than the Adventurer, the throphy will have a 50% chance of levelling that class up, and a 50% chance of unlocking a new class & race.
Unlocking the Faun also unlocks the class: Priest
Racial bonus: Rejuvenate (HP is restored to 25% on level up if it is currently lower than 25%)
Mortal enemy: Assassin (Damages your health for twice it's attack power each turn if he's in the bottom row. Since it will still attack normally, that means triple the usual damage!)
Mortal enemy effect: Automatically moves down 1 tile each turn