Sierra Von Dracus

Age: 16 (Battle of Overlord, Sierra's Tale ~Advance of the Black Knight~), 36 (Rendezvous)
Race: Dracus
Height: 158
Weight: 55
Appearance: silver hair, pale skin, red blood eyes, wearing a black bandanna, pettan, tsundere, youth appearance, and tsukkomi
Battle Gear: black armless outfit, black short pants, and black boots
Weapon: Grimtooth & Blood Phantasm

Sierra is Alucard Von Dracus and Sierra Fein Veinstern sole child, her name was taken from her mother name. at first glance Sierra seems cold and arrogant, but later it is shown that Sierra is a kind hearted and warm girl especially toward Brendan.

during the war against King of Underworld Sierra found Brendan's dead body, she than use her Blood Phantasm to revive Brendan from dead and recruit him to her own 'Black Knight' that rebels against Arcruel 'Black Knight', Sierra had a crush against Brendan and will do whatever it takes to make him happy.

in the Sierra's tale, it's also revealed that Sierra's soul is a half of Veinstern's soul. the dying Veinstern was taken by Kyousuke to the Sequentia Altar, and by using the Holy Cross Sequentia. Kyousuke was renewed Veinstern soul that was left in her dead body and thus give birth to Sierra, while the other part of Veinstern soul is attached to Alucard's memory and later manifest itself as Eliza Ravenhalt.

during final battle in the Tower of Babel. Sierra fought against Lexus Silvenberg, and use her power as a Dracus Empress the 'Crimson Purgatory' that turn her hair into red blooded colored and also advanced her Blood Phantasm power into it maximal level and defeated Lexus easily, but unfortunately it didn't kill him, and so he rise again and re-introduce himself as the true Arcruel and taken her as a hostage and bet her life during his fight against Brendan.

during the final battle Sierra was crying and said that Brendan musn't died, because she doesn't want to be alone in this world again. her feeling reach toward Brendan thus activated her & Brendan ultimate Drive, the 'Holy Arcanum' and put an end to Lexus and the Black Knight.

after the Sierra's Tale end, she married Brendan and had a twin child named Maria Von Dracus and Siegfred Von Dracus.