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Nervous, jumpy, submissive, usually terrified, and soul-crushingly pessimistic (reading one of Crona’s poems made a zombie so depressed he regretted he had ever been brought back to life), Crona is described on TVTropes as “the woobiest woobie that ever woobed”.

Crona’s mindset and personality have been shaped by the actions of Crona’s mother, the witch Medusa. When Crona was very young, Medusa began conducting a variety of experiments on Crona, in an attempt to create a Kishin (because every loving mother tries to turn their child into a demon god of insanity). So, Medusa melted Ragnarok down into Black Blood, replaced Crona’s blood with this wonderful magic substance, and then abused, starved, and forced Crona to kill small animals in an attempt to utterly break the child.

Medusa's actions resulted in Crona becoming violent and unstable, a traumatized child who doesn't know how to deal with normal interaction and very quickly resorts to destroying anyone or anything unnerving or distressing. Crona claims to hate everyone, and does everything possible to stay distant from others. In the anime version of the Soul Eater universe, the loss of fear is a major sign of insanity, and while insane, Crona fears nothing, willingly starts fights, and rushes to attack enemies head-on.

In addition to the violent side of Crona's personality, Crona is also fairly curious, constantly asking questions of anyone and everyone. This aspect of Crona personality does fade somewhat as the series progresses and Crona's more timid side comes to the front, but it is still part of how Crona's mind works.

After Crona and Maka become friends, Medusa apparently dies, and Crona begins attending classes at Shibusen, Crona's insanity fades and Crona's timid and pessimistic side comes to the forefront for a bit. Crona hides behind Maka, sits curled up in the corner of a room hugging a pillow, can't stand going out in crowds or walking around the school, and is terrified of one of the teachers (who happens to be a zombie). When Maka suggests that Crona write poetry to help share and express Crona's feelings, Crona's attempt is so soul-crushingly depressing that it makes everyone who reads it wish that they had never been born.

However, Crona does eventually become more comfortable around people, even without Maka around to provide support, and manages to settle in to a fairly normal school routine. Eventually, Crona becomes the sort of person who can stand up to Medusa as well as Ragnarok, a person who refuses to run away from responsibility and demonstrates selfless courage.

Noisy, overbearing, bullying, slightly perverted, and self-centered, Ragnarok is pretty much everything Crona isn’t. He bullies Crona, stealing his meister’s food and liberally delivering noogies and light punches, carrying on running commentary about Crona’s fighting skills during battles, and letting Crona take light blows (not in combat) that were meant for Ragnarok. Additionally, he enjoys the taking and eating of souls, even without Medusa’s mind-altering spells. However, he is somewhat fond of his meister (because of their shared bodies and symbiotic nature), and protects, heals, and at times even encourages Crona.

He's something like an annoying, bullying older brother to Crona, and influences and forces Crona to follow Medusa's orders. Greed, boredom, and his temper and pride are usually his main motivations, and he doesn't really have any sort of conscience holding him back.

As the story progresses, Crona begins standing up to Ragnarok and refusing to cave in to his bullying, and usually that's enough to get the sword to back down and let Crona be.

hydok

Crona was raised by hir mother, the witch Medusa Gorgon, who was an absolutely horrible person. First Medusa replaced all of Crona's blood with a magical substance called "black blood", which she made by somehow melting down a perverted bully with impulse control problems who could turn into a sword, then she physically and emotionally abused Crona for years with the intent of turning the child into a heartless killer, so that Crona could eventually become a demon god. Crona was starved, beaten, locked dark rooms for days on end, and forced to kill small animals, and eventually, humans. This treatment went on for years, until one day Crona and Ragnarok got in a fight with Maka Albarn and her weapon Soul Eater. Crona and Ragnarok defeat the pair fairly easily, but are then beaten by Dr. Franken Stein and his weapon (Maka's father) Spirit Albarn. Crona and Ragnarok leave, and then are next seen on the ghost ship Nidhogg, where they consume the souls that its captain had been collecting to sacrifice to the Kishin Asura. Crona and Ragnarok fight against Death the Kid, who had come to investigate the Nidhogg, and then leave.

When next we see Crona, zhe is providing backup for Medusa's attempt at reviving the Kishin Asura, who was imprisoned beneath Shibusen. Once again, Maka and Soul fight Crona and Ragnarok, but this time the ending to the fight is very different. Maka reaches out to Crona in a way no one ever had before, literally going into Crona's soul and extending an offer of friendship, which Crona accepts.

This new friendship with Maka (and Medusa's apparent death) results in Crona being accepted into Shibusen as a trial student. Crona begins to learn to interact with people more, going to school and carefully forming friendships. Then Medusa shows up again, tells Crona to turn traitor to Shibusen, and everything very quickly goes downhill. It is incredibly difficult for Crona to make a choice between hir new friends and hir mother, and Crona chooses to follow Medusa's orders. This choice absolutely wrecks Crona, who winds up running away from both Shibusen and Medusa. Maka tracks hir down and confronts Crona, who explained what zhe did and why. Crona hates Medusa, but feels loyal to Medusa, but doesn't want to hurt anyone ever again.

Because of Crona's betrayal, zhe is officially thrown out of Shibusen. However, zhe goes with Marie Mjolnir to track down Medusa, determined not to run away anymore, not to be the sort of person who is too weak to protect anyone. This leads to a final confrontation with Medusa, as Crona finally stands up against hir mother. Despite Crona's determination, Medusa is still able to seriously injure hir, as Crona's black blood abilities are nearly useless against the woman who created the black blood in the first place, and knows the best ways of hurting Crona. However, Crona's loss against Medusa does not trivialize the development that it took to get Crona to the point where standing up to and fighting against hir mother was a possibility. Once again, Maka comes to Crona's rescue, and kills Medusa.

Crona
Crona’s gender is unknown, so this (and any sort of third-person section) will sound kind of awkward.

Nervous, jumpy, submissive, usually terrified, and soul-crushingly pessimistic (reading one of Crona’s poems made a zombie so depressed he regretted he had ever been brought back to life), Crona is described on TVTropes as “the woobiest woobie that ever woobed”.

Crona’s mindset and personality have been shaped by the actions of Crona’s mother, the witch Medusa. When Crona was very young, Medusa began conducting a variety of experiments on Crona, in an attempt to create a Kishin (because every loving mother tries to turn their child into a demon god of insanity). So, Medusa melted Ragnarok down into Black Blood, replaced Crona’s blood with this wonderful magic substance, and then abused, starved, and forced Crona to kill small animals in an attempt to utterly break the child.

Medusa's actions resulted in Crona becoming violent and unstable, a traumatized child who doesn't know how to deal with normal interaction and very quickly resorts to destroying anyone or anything that unnerves hir. Crona claims to hate everyone, and says that no one is able to understand hir. In the anime version of the Soul Eater universe, the loss of fear is a major sign of insanity, and while insane, Crona fears nothing, willingly starts fights, and rushes to attack enemies head-on.

In addition to the violent side of Crona's personality, Crona is also fairly curious, constantly asking questions of anyone and everyone. This aspect of hir personality does fade somewhat as the series progresses and Crona's more timid side comes to the front, but it is still part of how Crona's mind works.

After Crona and Maka become friends, Medusa apparently dies, and Crona begins attending classes at Shibusen, Crona's insanity fades and Crona's timid and pessimistic side comes to the forefront for a bit. Crona hides behind Maka, sits curled up in the corner of hir room hugging a pillow, can't stand going out in crowds or walking around the school, and is terrified of one of the teachers (who happens to be a zombie). When Maka suggests that Crona write poetry in order to express hir feelings, Crona's attempt is so soul-crushingly depressing that it makes everyone who reads it wish that they had never been born.

However, Crona does eventually become more comfortable around people, even without Maka around to provide support, and manages to settle in to a fairly normal school routine. As Crona gets more comfortable around other people, zhe becomes less and less of a pushover, and starts standing up for hirself more. This is seen in everything from Crona standing up to Ragnarok's bullying and telling him to behave to Crona's eventual decision to go and attack Medusa with the intent to kill her.


Ragnarok

Noisy, overbearing, bullying, slightly perverted, and self-centered, Ragnarok is pretty much everything Crona isn’t. He bullies Crona, stealing his meister’s food and liberally delivering noogies and light punches, carrying on running commentary about Crona’s fighting skills during battles, and letting Crona take light blows (not in combat) that were meant for Ragnarok. Additionally, he enjoys the taking and eating of souls, even without Medusa’s mind-altering spells. However, he is somewhat fond of his meister (because of their shared bodies and symbiotic nature), and protects, heals, and at times even encourages Crona.

He's something like an annoying, bullying older brother to Crona, and influences and forces Crona to follow Medusa's orders. Greed, boredom, and his temper and pride are usually his main motivations, and he doesn't really have any sort of conscience holding him back.

As the story progresses, Crona begins standing up to Ragnarok and refusing to cave in to his bullying, and usually that's enough to get the sword to back down and let Crona be.

Soul Perception: Crona can see souls. Power levels, species, and some basic personality traits. It's not a very strong ability, just enough to identify and track people at close range.

Ragnarok’s abilities: Transforms into broadsword, which uses sonic vibrations to act a like a buzzsaw, shredding in addition to slashing. Three different forms of his Screech attack (α, β, γ) which unleash a devastating sonic wave in conjunction with slashes of the sword.

Black Blood abilities: Blood hardens to provide protection against all by the strongest cutting attacks. Enhanced strength. Inhumanly fast healing if injured. Manipulation of blood outside of body (for example, the bloody needles attack, transforming blood splatters into flying needles, or the bloody slicer attack, in which Crona slits hir own wrist and uses that blood as a blade). Can use the black blood to grow dragon-like wings and fly.