Full name: Rena Gorgon (Daughter of Crona)

Age: 15

Gender: Female

Classification: Meister/Weapon

Soul Resonance: Rena is able to create and project blasts of blood that can take the form of any creature or object that they can imagine and make their blast seem like it's alive if they want.
Appearance: 
 
Black Blood Sword
 
Rena’s two personalities(sane and insane)
 
Rena’s Bloody vectors(but black)

 
Rena’s soul resonance

 
Insane mode
Personality: Rena seems to have a sweet and friendly nature, although some situations can cause that to change dramatically, in particular, she is known to react strongly to lies with a deafeningly loud “That's a lie!” Rena hates lies, especially when it's her friends who lie. She occasionally comes off as a bit of an airhead, but she is actually surprisingly intuitive, especially when it comes to her friends.
Along with her intuition, Rena is known to be capable of becoming quite frightening and dangerously hostile when she is determined. She is able to easily intimidate people through her eyes and words, rarely losing emotional control like most people. Her friends often call her the "quiet, blue flame that burns silently," referring to her capability of becoming incredibly powerful when push comes to shove, despite her normally girly and seemingly-airheaded personality; in such situations, Rena will always be the instigator of and the most bluntly offensive in a fight, as Rena also has the ability to fiercely and successfully retort in a very sharp and biting way when involved in heated debate. People describe Rena, and Rena describes herself, as being hostile towards people who make light of or express disbelief in the curse of madness. This is due to her own experience with it and her belief that the demon manifested by the black blood inside her heart and mind physically exists. She often empathizes with and is able to identify people who are afflicted with advanced symptoms of black blood madness. Rena appears to be very perceptive, as she is able to somewhat understand people just by looking at their face. She does admit directly that she can easily "tell if you’re telling the truth or not just by looking into your eyes". For the most part she is a sweet, feminine and sometimes shy girl when her madness is under control. This masks her dark and sanguinary side--a ruthless, cold and calculating psychopath who has little, if any problem hurting others for fun. She will resort to cruel and usually violent methods that generally end in bloody deaths. However, she isn’t always insane. Her brutal 2nd personality is the result of her blood being completely black, a trait she inherited from Crona. As she gets older however, the madness keeps getting stronger and she is struggling to keep the good, sane part of her alive. Thankfully you can tell if she is sane or not by looking at her eyes, which turn from their usual light pink color to blood red.
History: Rena is Crona’s daughter. Like Crona, 100% of Rena’s blood is black and she struggles with insanity. Also like Crona, Rena’s weapon does not have a separate body. Unlike Crona, however, Rena is the Weapon as well as the meister. Although Rena is a weapon, she cannot transform, instead her blood can harden into a sword similar to ragnarock’s weapon form, except pure black. Also Rena can release/use blood to attacks of various shapes and/or intensities, either projected, used as a part of melee attacks, etc. Her favorite attack was one she inherited partly from her late grandmother Medusa. Known as bloody vectors, which grants her telekinetic extensions of herself made out of black blood and controlled naturally through both conscious thoughts and instinct. These vectors possess incredible strength, being capable of tearing apart, cutting and crushing extremely resilient materials like paper. They are also extremely fast and precise, following the user's thoughts instantly and exactly. They notably possess a perceptive aspect, allowing the user to instinctively sense things through them. During a fight, they can be used to deflect most attacks with frightening reactivity, and obliterate most targets with stunning speed and power. They are also very useful to neutralize opponents, physically overpowering them in a heartbeat, and keeping them submissive in a multiple telekinetic grip, all while appearing calm and passive. As she gets older however, the madness keeps getting stronger and she is struggling to keep the good, sane part of her alive.