Aleister Crowley Is a exorcist with vampire-type abilities. After being exposed to Akuma blood, his innocence made him thirst for it, like blood to a vampire.
Aristar Krory is an exorcist with a parasite type anti akuma weapon which allows him to drink akuma blood and gain superhuman abilities. he was accused of being a vampire in his old village then decided to join the black order to become a full fledged exorcist.
Arystar Krory III is one of the main protagonists created by Hoshino Katsura for the series D. Gray Man.
Most of Krory's evolution took place during his introduction arc. He was painfully but quickly able to turn his back on his Akuma lover and his wealth in order to live a life he deemed respectable.
Krory appears as a tall and thin man of middle age. He is probably the tallest Exorcist at the European Branch. His skin is particularly pale and his hair is black with a prominent streak of white coursing through it. He has pointed elf-like ears and all of his teeth are serrated.
Krory is an extremely reserved, shy and awkward individual. This is due to his past of relative seclusion, being away from the social life. He is probably more awkward than the similar Miranda. In stark contrast however, when Krory activates his innocence, his personality is almost the opposite. He becomes aggressive, and violent and lusts for Akuma blood. He does still retain enough control to not attack an ally or an innocent bystander.
Krory was quick to encounter the exorcists that were initially just passing through but were practically forced by the villagers to try and exorcise the local vampire, that being Krory himself. Allen and Lavi were coerced into looking for the vampire. Eventually they made their way to Krory's castle and Krory attacked almost immediately. After a scuffle with Allen and Lavi, he left the surprised as he was able to bite through Allen's exorcist arm and catch Lavi's massive hammer with his teeth. He then retreated with a victim named Franz. He is later seen at his castle with his lover Eliade. He cried that he had become a vampire once more and wanted to revive Franz, the man he had attacked earlier. Eliade told him there was nothing they could do but bury him since he was dead. Krory wept in rage and almost attacked Eliade on impulse. He was later re-paid a visit by Allen and Lavi. They combated again and their battle made it's way to the castle graveyard. Upon closer inspection, Allen realized that all those buried in the graveyard were actually Akuma, and all of Krory's victims had been Akuma whether he intended it or not. At this realization, Allen and Lavi realized they were fighting a friend not a foe and they tried to convince Krory to stop fighting, but it fell on deaf ears. During the battle however, Allen's previously damaged Pentacle eye had just finished reforming itself and he was suddenly able to see that Krory's lover Eliade was in fact a level 2 Akuma and she had been manipulating Krory for years. With it's improved evolution, Allen was able to allow Krory to see as he did via his Pentacle Eye. Upon seeing the proof with his own eyes, Krory painfully attacked and brutally killed Eliade himself. Clearly in a depressed state, Krory stopped fighting. Allen approached him and asked him to come with them and he could be a proper exorcist as they were. Krory agreed because he felt he had nothing left. He departed without delay with the duo and burned his castle to the ground so that there would be no turning back.
After convening, Krory, Allen, Lenalee, Lavi and Bookman traveled to China in search of General Cross. After meeting with Anita, a former mistress of General Cross', they discovered that he had been in China up until about a week prior to their arrival, and that he had traveled to Edo, Japan. En route to Edo via Anita's own ship, the group were suddenly surrounded by an army of akuma. Allen and Lenalee leaped to attack but quickly found that the Akuma army was not even paying them any heed and were going right past them. Not knowing what was going on, Allen and Lenalee decided to go after the Akuma anyway as it was clear that even though they were not their targets, such a mass of Akuma heading for one direction could only be for the worse. Krory fought a few of the Akuma, but as they passed by fully, only Allen and Lenalee had pursued them while Krory and the rest stayed at the vulnerable ship.
Perhaps because he is of the parasite class, Krory's physical attributes are particularly high. He wields no weapon and relies entirely on his body for combat. His strength and speed are enhanced beyond normal human levels and appear prominent even among Exorcists.
The unofficial name of Krory's Innocence. Te actual name has not been revealed. It is of the parasitic class like Allen Walker's Cross. Krory's innocence was derived by getting bitten by a plant called Roseanne, and it happened to be a gift from General Cross Marian. After getting bitten, Krory became ill and changes occurred in his body, most notably his teeth coming out and new serrated ones growing in their place. These teeth became Krory's innocence weapon.
By biting the target, Krory can extract viruses in their system and take it in himself. The virus will not harm Krory but he is left weakened.
Krory injects his blood into the intended target. Since his blood is laced with Innocence, that too is transferred to the victim. Since innocence is the natural weapon against Akuma and the Noah, it can cause heavy damage, in the case of Akuma, even cause them to explode. It's unknown what effect if any this ability has on non Noah/Akuma.
Krory spreads his own blood over parts of his body. The effect is that said fortified parts become stronger. He used this on his hands and claws and his strikes became more deadly.
Akin to a larger scale version of Blood Fortification. Krory spreads his blood over nearly the entirety of his body and even forms blood wings. His whole body becomes more powerful. His brute strength increases drastically as is his durability and his tolerance for damage. It is a kind of berserk state and can be used even when Krory is at the end of his stamina. Also due to the blood wings that form upon entering this form, Krory temporarily gains the ability of flight.