The Female Vampire Nobility
Melancholic. She is gentle, mostly reserved and impassive except when in battle- quite unbecoming as one of the Vampire's Nobility. Most of the times, she avoids fights like the pest, preferring to use her superior intelligence to solve problems that arises. It is this intelligence that secured her position as one of the Council Members, which also bolsters her own self-esteem.
'Gladius' Her personal weapon which she carries around with a scabbard that looks exactly like the blade (Which in turns gives off the false impression that the blade really is sheathed when sometimes, it truly isn't.)
Born a genius, Sera was destined to live a life she could easily craft out with her superior intelligence, but alas, fate would not have any of it. At age 16, she was bitten by a Vampire, supposedly by Giovanni himself. This changed her fate drastically. From her destiny to be someone who may make a huge impact in the human world, she became a vampire that would be of great use.
By personality, she was gentle, and reserved, to an extent that one would consider her impassive- which happens to be true. A shrewd and cunning strategist, she uses her brains more than her brawns. Most battle she won or had a part in winning involved her clever tactics, especially against Lycanthropes, whom she specially paid more careful attention. (It's nothing, just mere stereotype against the Lycans since they are the Vampire's enemies)
She doesn't exactly believe immediately in Vampire Supremacy, but she does know the Coven should have to band together in order to survive a battle against the other races, thus she continues to work with the rest.