Ryuuji Kuroi

"“Humans. That is their problem.” —Ryuuji Kuroi" Ryuuji Kuroi (黒井 竜司), also known by his true name, the Incubus King, (淫魔王) was introduced as a student of the Seishu Academy and the son of Japanese Prime Minister Yoshima Kuroi, his real identity being Darius. In reality, he was the true mastermind behind all of the events and the consequences that dwelled throughout much of the installments of the Mahou Kaiju Series, especially those involving the disappearance and search for Shiranui Mizuki. Because of these revelations about him, Ryuuji would become one of the most dangerous and powerful adversaries of the Mahou Kaiju Series, making sporadic appearances in the series' final installments before becoming the main antagonist of the antepenultimate film Tatsura and Wataru.

Appearance
In his human form, Ryuuji is a tall attractive man with dark skin, silver hair that reaches up to his neck and reddish-brown eyes.

His demon form is a black winged Lovecraftian monster. Standing at around 10 Meters, with two horns, giant hands with sharply tapered fingers. On his back, bat-like wings that tapered to sharp points at the end. As well as tentacles coming from his mouth stretching from it. A tail which split into two partway down thicker and longer than any snake.

Personality
In contrast to his attractive appearance, Ryuuji is a very rude and disrespectful person who demands and gets what he wants. He is also possessive of women, when it is shown that he wants to have Rinko all for herself. Despite being a delinquent, Ryuji is part of the scholarship department, which was only reserved for students who had done exceptionally well on their academics. Many assume Ryuuji got in because he was apparently related to the headmaster, but that is far from the truth.

As leader of the Sindicate of Moonless Night, the last remaining major incubi-led faction in the Underworld, he desired nothing more than have the entire realm to himself by promising the incubi and succubi to serve by his side and overthrow all other rival demon factions, such as Edwin Black and his organization NOMAD. However, as time passed, his megalomania grew bigger, as his ambitions soon expanded to the conquest of the human world as well, to finally the original plan of the ancient incubus faction: summoning the Darkness Itself, the primordial embodiment of darkness and evil, to annihilate the entire universe and recreate a new world where incubi and succubi would inhabit and rule, with him as the absolute ruler.

The Incubus King was tolerant and somewhat attentive to the needs of his subordinates, giving them rewards for their success or just for their unyielding loyalty, such as whenever he would reward his favorite concubine and "Queen" Shiranui Mizuki for accomplishing the tasks given to her. Another example of his upholding his bargain to his servants was when he offered the two Nazis-turned-demons Count Brocken, a former general of the Mycenaean Empire, and Marshal Hidler, a clone of Adolf Hitler who became an oni, joined and then defected from the Hyakki Empire, to serve him. And if they remained loyal, when the universe would be destroyed by the Nanashi-no-Yami, he would spare Brocken and Hidler, along with their "Aryan race", (basically humans whom the two would personally select to spare and serve by their side) as the only humans in the new world, so that they could build their long-desired "Fourth Reich" as he promised he'd let them do and intended to hold onto that agreement, which got some irritation from other loyal commanders in the faction like Gejisuki, who disliked that kind of offer being given to humans.

Likewise, just as he was kind to loyal and successful offshoots, he was also just as cruel and merciless to and punish disloyal and/or defeated servants to death, as he would not tolerate weakness, failure and insubordination within his group, even to those of his own blood, best exemplified when he murdered his own father Darius the Hellbourne after being defeated, had his plan foiled by and barely survived in his battle against the Taimanin and Grandwalkers.

Tatsura vs. Hellbourne
Ryuuji is introduced as a third-year student at the Seishu Academy, who is a part of the scholarship department. He is stated to be a delinquent and is apparently related to the school's headmaster, Shigeru Washizu. During the events of the film, Rinko Akiyama, as part of her and Yukikaze's mission, was assigned to be his maid, as students from the scholarship department are given a maid or a butler.

After the defeat of Darius, it was revealed to the heroes that he has been the one controlling Nobunaga Oda, Muneichi Yazaki, Real, Shigeru and Darius' actions. He was the one who resurrected Nobunaga over a decade ago, commissioned Yazaki and Real to cause Shiranui's disappearance, has kept the woman as his personal slave after they failed him and ultimately drove the already-chaotic "Neo-Sengoku Era" out of control. It comes as no wonder at this point why Ryuuji is able to get away with so much, like taking advantage of his father's position as Prime Minister and using that to surpass Shigeru as the actual boss of the campus, and still keep himself hidden. After a brief yet difficult battle against him, Ryuuji escapes, with Tatsurou, Yukikaze and the others vowing to make the monster pay for his crimes. He encounters his defeated and injured father Darius who pleads to save him. Instead, he mercilessly murders his own father, saying he has no sympathy for a weakling, even those of his own blood.

Abilities
As a Forbidden God, leader of the Incubus Faction and the mastermind behind several events revolving Shiranui's disappearance, the Incubus King proved to be one of the most dangerous adversaries the Taimanin ever faced, around the same level as other high-powered demons such as Edwin Black, Omorfia Astaroth and Teutates.
 * Immense Superhuman Strength –
 * Above Mountain-Level Destruction – Has the ability to destroy entire cities or a whole mountain range with enough firepower.
 * Immense Superhuman Durability –
 * Superhuman Invulnerability –
 * Regeneration – Is able to heal mayor and minor wounds in seconds.
 * Aura Attacks – Able to use his aura for attacks and defense.
 * Flight – He can hover from above the ground and fly at around 800 miles an hour.
 * Laser Beam – Can collect energy in his mouth and shoot a large laser beam from it.
 * Perfect Barrier – Is able to create a powerful force field making almost all attacks at him useless.
 * Transformation – He can transform into a giant winged Lovecraftian monster increasing his powers even more.
 * Size Change – He can also change from human-size to giant for kaiju fights, and vice versa whenever he wants to.
 * Illusion – Is able to create illusions to trick Rinko that she thinks she has sex with Tatsurou.
 * Lust Creation – Seemingly is able to create lust and arousal for his body in others supernaturally.
 * Insanity – The thickness of his demonic aura is speculated to turn normal people insane.

Quotes

 * “Do plenty of things with me so you could be be a good maid.” (立派なメイドになるよう俺がたっぷりん仕込でやる)
 * “Humans. That is their problem.” (そいつらは人間、それは問題面倒だ)
 * “Destitution… Desecration… Desperation… Desolation… Destruction… Open! Gate of Moonless Night Death! Come, Bangetsu Ga Ryuzark…” (壮絶…絶大…絶望…絶命…絶滅…開け！無月の門・絶！来い、卍月ガ・リュザーク…)
 * “Pride… Greed… Lust… Anger… Gluttony… Envy… Sloth… Haaah… Count your sins before the Ban-no-Tsumi…! Great Sin of Moonless Night, release!! Orega Aura, Ride On!” (傲慢…貪欲…邪心…忿怒…貪食…嫉妬…怠惰…はぁぁ…卍の罪を数えろ…！無月の大罪、解放ぉぉぉっ！！オレガオーラ、 来怒怨ライドオン ！)
 * “Ban… Zai…! Dai! Ban! Zai! Sin Gate of Moonless Night, release!! Ahahahahaha! Orega Aura, Ride On! Daibanzai Do Raganzark!!” (卍…罪…！大！卍！罪！罪・無月の大罪、解放ぉぉぉぉっ！！あははははは！オレガオーラ、 来怒怨ライドオン ！大卍罪ド・ラガンザーク！！)
 * “Begin the ritual of the birth of the Nanashi-no-Yami! Dark Nebula deployment!” (名無闇誕生の儀式を開始する！闇黒星雲展開！)
 * “Playtime is over… You shall now witness my true power…” (遊びはそこまでだ……これこそは真なる我が力…)
 * “Don't move! Your Infinite Power shall be absorbed into this Darkness in a few moments. Now, both of the halves of the Nanashi-no-Yami that were separated from the beginning of the universe shall unite through the Mumei-Anmu! And so, this will be the birth of the perfect darkness itself.” (動くな！間も無く、お前の中の無限力は、すべて闇に吸収される. 宇宙の原初から二つに分かれた名無闇が、この無名闇霧として一つになる！それこそ、完全なる闇其物の誕生)
 * “Now is the time turn everything into darkness. No love, no hope, no future and no life… nothing! For the god of the end that turns all into nothing is here… Ban-Dai-An-Tan!” (今こそ全てを闇へと裏返す時. 愛は無、希望は無、未来は無、そして命は…無！全てを無にする終焉の神……卍・大・闇・誕！！)
 * “Come, Nanashi-no-Yami! The time has come for the severed halves to become one!” (さぁ来い、名無闇よ！引き裂かれた二つが、一つになる時だ！)
 * “All of me… shall be unleashed!” (余は……我が自身を解放する！)

Trivia

 * Of all the villains in the movies involving Shiranui's family, Ryuuji is supposedly the most attractive-looking, not counting a brainwashed Shiranui Mizuki.
 * He is somewhat the attractive of the Forbidden Gods in his human form, while his father's human disguise is physically ugly.
 * He seems to be equal to Edwin Black in power even though it rivals him.
 * His Incubus King form and powers to drive anyone mad or insane plays a homage to Cthulu from Call of Cthulu by Howard Phillips Lovecraft.
 * He is one of the few characters who has committed patricide by killing his father, Darius the Hellbourne in Tatsura vs. Hellbourne.