Many heroes walk a thin line between good and evil, indeed many heroes have fallen into despair, rage or even madness, and once proud heroes descend further into the path of evil.. often fighting against people they once protected or fought alongside. Originally protagonists or somewhat good guys, these villains turn evil due events in their lives such as being corrupted by another villain, the desire for revenge, or a failed love relationship, or betrayal from the good side to the dark side.

Many Heroes turn to the Dark Side/Villain side in BLAD due to certain elements such as corruption, revenge, being in love with Terrantos (females), being friends with Terrantos (Males), and or in some people's cases such as Terrantos himself was influenced by Chaos and Lilith.