Loosely, affinity determines a character's stat boosts that are gained from supports. Supports depend on the affinities of the two characters that are being bonded, and they determine the type of bonus given. The following tables are a compilation of bonuses given by the dark affinity in each game.

The Dark affinity is a rarity in the Fire Emblem series, as only a few characters possess it in each game. It gives neither offensive nor defensive bonuses in the GBA games, making it somewhat of an oddity, as it gives full Hit, Evade, and Critical instead. In the Tellius series it became an offensive affinity.

Dark Affinity Bonuses in Fire Emblem: Binding BladeEdit

Characters with the Dark Affinity in Binding BladeEdit

Astore, Merlinus, Percival, Rutger, Sophia, Zelots, Miledy

Dark Affinity Bonuses in Fire Emblem: Rekka no KenEdit

Characters with the Dark Affinity in Rekka no KenEdit

Rath, Isadora, Karla, Merlinus

Dark Affinity Bonuses in Fire Emblem: The Sacred StonesEdit

Characters with the Dark Affinity in The Sacred StonesEdit

Knoll, Orson, Rennac, Riev

Dark Affinity Bonuses in Fire Emblem: Path of RadianceEdit

Characters with the Dark Affinity in Path of RadianceEdit

Calill, Giffca, Soren, Naesala

Dark Affinity Bonuses in Fire Emblem: Radiant DawnEdit

Characters with the Dark Affinity in Radiant DawnEdit

Black Knight, Calill, Giffca, Micaiah, Naesala, Soren