Yakunan

Yakunan (厄難, Yakunan), real name Billy Bob Bobby is a very powerful Dark Mage, specializing in Black Arts and certain forms of Darkness Magic. He was Devil's Abode first Guild Master, and the one who passed on the title to his younger sister Akuma. He is also the uncle to the Earth God Slayer Hatsumi, and the leader of Devil's Acolytes. He is the main antagonist of Fairy Tail: The Dragon Slayers, and is the most powerful enemy of the series, just behind Zeref.

Appearance
Yakunan is a tall man with spiky blue hair that usually stands up. He has his face bandaged so that only his red eyes can be seen, with two strands of the bandages falling down from either side of his face down to his waist. He wears black garments, with a black belt around his waist and left leg, as well as a black cloak that covers his whole body.

Personality
Yakunan is a completely sinister and evil individual. He is very cold, unsympathetic, remorseless, cruel and incredibly sadistic. Yakunan is seen to be also very vindictive. He is often described as the incarnation of evil itself by Eagle, due to him showing no hesitation when it comes to killing or torturing innocent people. Just like his sister and niece, Yakunan enjoys torturing his victims physically and mentally, always employing several psychological techniques, but to a much higher extent. At times, Yakunan also appears to be calm and collected, and is willing to take over a fight if necessary. Yakunan also has a low tolerance for failure, not allowing any means of fail, and would even kill his own men if they fail in a job, such as killing Eagle. He is also very direct, jumping to the matter at hand, never avoiding the subject, just like his sister Akuma and niece Hatsumi. Yakunan also enjoys torturing Eagle more than anyone else, which is always seen mentally. One of Yakunan's goals is to get Eagle to be consumed by his own anger.

Despite this, Yakunan also seems to have a rather silly side using jokes and silly motifs to make points and dodge important questions asked of him. He sometimes portrays a comical character of sort, displaying stunned expressions on different occasions, such as when Hatsumi shattered his sword during practice, where he let out a river of tears, leading to Akuma having to comfort him, just as any mother would confort a child, leaving Hatsumi with a blank white and shocked expression. Another time was when Eagle used his weapon and managed to cut Yakunan's robes, leaving him upset, saying on how he had messed up his favorite robes, although Eagle said that all of his robes were the same, Yakunan still teared and vowed to get revenge for his robe who was killed in battle.

Also, although always acting as a cruel being, he may even have a tender side for his sister Akuma. He is seen to care for his sister, although they rarely treat each other as how brothers and sisters usually treat one another. Still, Yakunan treats her with the utmost respect, and always addresses her by her name, since she is the current guild master of Devil's Abode. Yakunan, at one point stated, that his sister is the only person who he truly cares about, and that it would be her to continue their legacy if he were to die. Also, both can be dependent of one another, but are very serious with  each other when it comes to a mission.

Another fact of Yakunan's personality, is that he has a great respect for his enemies and praises their abilities, such example being the Dragoon siblings, although he gives more praise towards Eagle, who is his main rival. He does not act below those he deems to be weak, but considers them to be pathetic nonetheless.

Magic and Abilities
PLEASE NOTE, SOME OF THE MAGIC HERE WAS TAKEN DIRECTLY FROM THE MOTHER WIKI, AND ALL CREDIT GOES DIRECTLY TO THEM

Black Arts (黒い魔法 Kuroi Mahō): Yakunan is a highly skilled user of Dark Magic. Still, his abilities in this magic were strong enough for him to kill his own master and other Mages. Although he desires to be as strong as Zeref, Yakunan himself has mastered several spells within Dark Magic, always using it to achieve his own gain. When using his magic, Yakunan will use of emotions to increase their power and will use them to also cause internal pain to others, as such it was Black Arts that led him to the creation of a new form of Pain Spells. He himself will randomly outburst his magic and kill them without hesitation. Even when he was younger, Yakunan managed to learn several spells known by Zeref, and such are Death Magic. Living Magic (生活魔法 Seikatsu Mahō):A very ancient, long-forgotten form of Magic that allows the user to breathe life into an object, either being rubble or the earth itself. However, Yakunan has rarely been seen using this magic, but rumors state that he has created several demonic creatures, all of which are dormant.
 * Death Magic (死の魔法 Shi no Mahō): Death Magic is a form of the Black Arts allows Yakunan to kill any living being that he may desire. However, it is uncontrollable at certain moments. When focusing on his goals and deadly desires, Yakunan has perfect control over it, and it was seen when he killed two innocent civilians without a sense of hesitation.

Transformation (変身魔法 Henshin Mahō): Yakunan has the ability to transform into his enemies, allowing him to copy their magic abilities. However, it consumes a lot of magic power, despite the fact he can transform at will, and has been the reason he has snuck into Magnolia several times.

Thought Projection: Yakunan has been shown capable of using this Magic, producing an astral projection of himself, impervious to damage, which allowed him to communicate over long distances, and, most importantly, carry on his deceptive plans, such as luring Eagle Dragoon away from his sisters, to only have him ambushed by both Akuma and Hatsumi.

Darkness Magic- A type of magic Yakunan learned during his early years as a Dark Mage. Yakunan mastered many spells within Darkness Magic, including several of Zero's spells. He also knows spells similar to that of Jose Porla.

Telepathy: Yakunan has demonstrated great proficiency in his use of Telepathy, having been capable of performing a mass-communication with those nearby, and even feign Eagle's voice in the midst of said communication. He is also capable of jacking another mage's telepathy with ease.
 * Dark Rondo (常闇回旋曲, ダークロンド, Dāku Rondo): When cast, Dark Magic with horror-stricken faces swirls around Yakunan's hands becoming more and more condensed. Yakunan can then fire the gathered Magic as widespread attack (as he did against the Dragoon siblings), or as a condensed one (as he did with Eagle).
 * Dark Capriccio (常闇奇想曲, ダーク・カプリチオ, Dāku Kapurichio): A beam of darkness is fired from Yakunan's c hands meant to be used as to pierce through defenses. Yakunan is seen to have great control and is able to manipulate its movement with one hand, cast more than one beam at a time, and even use it as a whip.
 * Dark Wave: Yakunan darts toward his target and attacks them with a wave of Darkness Magic that he, just prior, gathered around his fist.
 * Dark Delete: Several spheres of darkness are fired continuously from Yakunan's hands.
 * Self-Destruction Spell (自律崩壊魔法陣 Jiritsu Hōkai Mahōjin): A Magic that forces the complete destruction of an object. Yakunan has only used this spell twice.
 * Devil's Smite: One of Yakunan's most powerful spells, and one of his own self-created spells. Yakunan gathers a large amount of Darkness Magic around his fingertips before, shortly before unleashing a wave of several demons, all that engulf the enemy and drain the enemy's magic power.
 * Soul Theft (魂の盗難, Tamashī no Tōnan): A very strange Darkness Magic spell. With this particular spell Yakunan is able to possess other with his magic, and such magic is capable of corrupting one's memories and personality. Yakunan used this to spell to have Eagle work for him and his sister, after deciding not to kill him, and that it would be best for him to serve them. It is currently unknown if the spell can be broken, or the one possessed can be freed.

Immense Strength: Yakunan has shown on numerous occasions to possess a high degree of strength, and was shown being able to toss Eagle halfway across a field with a single blow. He has also used such strength to not only move, but attack with surprising agility and strength, even catching Eagle, Rika and Kiyoko off-guard all at once, shortly before pummel them down with his own strength.

Enhanced Reflexes: Even for his height, Yakunan possesses very fast reflexes, being able to dodge several attacks all at once from both Eagle and Yakunan, two very powerful Dragon Slayers. He was also able to dodge several swipes from Kiyoko's spear, either shaft or chained form.

Immense Durability: Yakunan has displayed to have an immense amount of durability, having taken several blows from Eagle and Kiyoko all at once, and continued to fight. Even thought he has received the full force of both Earth Dragon and Earth God Slayer combined he managed to get back up and challenge Eagle, although he later received the full force of Ice Dragon and Ice God Slayer Magic, it rendered him unconscious. He has also received several blows from Eagle, all of which could've been fatal, and managed to remain unscathed, even from an enhanced Ice Dragon's Roar, and Earth Dragon's Roar separately.

Enhanced Sensor: Yakunan was able to sense Eagle approaching Devil's Abode from quite a fair distance.

Immense Magic Power: Being a Dark Mage, Yakunan has an immense level of Magic power, as is tied to a very dark and evil aura.

Master Hand to Hand Combatant: Although he is rarely seen fighting, Yakunan is a capable fighter, being able to fend of Eagle on equal ground.

Trivia

 * The description for Yakunan's appearance was taken from Shakugan no Shana. The character being Sabrac, and all credit goes to the creators for all their hard well-deserved work.
 * Yakunan is the strongest character in Fairy Tail: The Dragon Slayers.
 * Yakunan has killed more people than any other in the show. That being numerous mages, including Blaze Dragoon, the father of Eagle and Rika Dragoon. Such kills include even his own dark mages from his old team The Hunter's, and several others from his guild, resulting from their failures in missions. This includes numerous of innocents in numerous villages, one of those being Tsukiko's parents.
 * Yakunan inadvertently caused a clash between him and Tsukiko, not only resulting from the injury he caused Eagle, but also Tsukiko's parents which he revealed, because he recognized her.
 * Yakunan's page was previously Eagle Sky's, but was changed because Sky wasn't being used for anything. Also, Eagle Sky will not be returning at all.
 * Although Yakunan shares his main role as an antagonist with Akuma, he serves a much more higher role than his sister.
 * In Frozen Winds, Yakunan does not portray his role as Akuma's older sister, thus not being Hatsumi's niece. In that story, he is Akuma's husband, thus being Hatsumi's father.

Quotes
9Yakunan to Eagle): "We end this now Eagle. Today, your family and your entire guild will fall, and no one shall ever remember you. However, I must admit you are a worthy adversary, and I thank you for giving me the best fights of my life. I will take great pleasure in removing you from the face of Earthland."