Ultraman Ace Edit
Yapool, an ancient creature from another dimension with similarities to Satan and Legion, was an extremely skilled being of many conciousnesses with a nack for creating biological creations known as Choju. Little is known about his history other than being one of Emppera Seijin's four Heavenly Kings, or generals, in the Great Ultra War. He set his sights for Earth, but the original Five Ultra Brothers would stop him with their youngest member, Ultraman Ace. Because of Yapool's new age of aliens Ace spent over a year with the help of TAC to destroy everything Yapool had up his sleeve and even defeated him in his own dimension. Yapool also hired other aliens to assist his kaiju destroy TAC only for Ace and the occasional help from his brothers to utterly defeat him. Even after Ace went back to M-78 Yapool would not stop his conquest for Earth and would try again and again when other Ultras were defending Earth only for more defeat.
After the Yapool consciousness, Space Mask, tricked a group of children into making the Chouju, Black Satan, TAC decided to attack him in his own domain. Using a special dimensional traveling device TAC sent Kokuto first because he volunteered. However, as the traveling started Yapool began to disrupt it and nearly teleported him into another dimension, but Zoffy arrived and managed to allow him and Minami to become Ultraman Ace. Once Ace was in his dimension Yapool turned into a single entity, Giant Yapool. The battle between the two giants commensed as Giant Yapool and Ace exchanged beams until he was incapable of going on much further. With Giant Yapool beaten Ace decided to leave his dimension. Although Giant Yapool was not killed he would be incapacitated long enough for other aliens to attack Earth while he recovered.
Ultraman Taro Edit
Many months after Ultraman Ace defeated his most powerful chojuh, Jumbo King, Yapool hid himself into exile and somehow created a saucer that allowed him to enter Earth's dimension, but in space. Yapool wasn't sure if he should attack Ultraman Taro or not, but after a second Alien Mephilas and Eleking being revived by mystical forces failed, Yapool wanted to be different and make a successful come back. Instead of using one of his own monsters Yapool decided, much like Alien Nackle in Ultraman Jack's time, to revive Bemstar. Unlike the original Yapool would make his own modifications to the native being of the Crab Nebula and turn him into Advanced Bemstar. ZAT was well aware and alert of the situation and tested a new type of giant buzzsaw on Advanced Bemstar they claimed was exactly like Jack's Ultra Bracelet, but Yapool's modifications proved that it was not enough to defeat Advanced Bemstar. After Advanced Bemstar defeated Taroh Yapool demanded him to eat the rest of the oil refinery he was attacking. However, Taroh returned with ZAT and began to mercilessly beat down Advanced Bemstar. Yapool sent weaker versions of Sabotendar and soon Velokron to take care of the situation only to be defeated by Earth's forces. Yapool tried to retreat from Earth's atmosphere, but Taroh made his saucer explode with him inside using his version of the Ultra Slash.
Ultraman Mebius & Ultra Brothers Edit
In the 1980s, the ever plotting Yapool sent a new chouju of his, called the U-Killersaurus, to dispose of Ultraman, Ultraseven, Jack, and Ace. The battle began on the moon, with the four Ultras dodging everything U-Killersaurus threw at them. Grappling with the beast proved futile, as its strength was enough to hold off two Ultras at once. Yapool laughed at their efforts. He claimed that U-Killersaurus was created form the hate of the Yapool. When the four Bros. tried to use their beams on the chouju, it flew towards Earth. The heroes tried to stop U-Killersaurus, only to be met by a barrage of his organic missiles. Avoiding those, the Bros. prepared to launch their beams again, when Ultraman halted them; firing their beams so close to the Earth could harm the citizens. After grappling with U-Killersaurus' extendable claws, it was then that the four of them did the only thing they could do without harming Earth: imprison U-Killersaurus in a dimensional prison with its creator, Yapool. After crippling U-Killersaurus by blasting off his limbs, Jack and Ace combined their Specium and Metallium Rays to send U-Killersaurus plummeting into the Earth. The Bros. arrived at the scene, and, using the Final Cross Shield, the four Bros. sealed U-Killersaurus and Yapool into the bay they had landed in. For twenty years both Yapool and U-Killersaurus would remain sealed, until Aliens Temperor, Zarab, Guts, and Nackle would try to free them. After finally being revived by Alien Nackle and Alien Guts, U-Killersaurus was even more powerful than before. Yapool was revived as well, and casually killed his supposed ally, Nackle (Guts was destroyed by Mebius). As far as he was concerned, Nackle was just a pawn. U-Killersaurus then proceeded to mercilessly beat the Ultra Bros. with his new strength. Even when Ultraman Taro and Zoffy arrived to assist the brothers, they still could not stop this juggernaut of a monster. U-Killersaurus Neo soon caught Mebius with his large pinchers, and prepared his ultmite attack in order to ill him. However, the remaining Ultra Bros. combined their power with Mebius, and the result was Ultraman Mebius Infinity. U-Killersaurus Neo was helpless against him, as he easily smashed into his body and came out the other side, causing U-Killersaurus Neo to decay into dust, along with Yapool, ending his terror until Emppera Seijin revived him months later.
Ultraman Mebius Edit
This Monster reappeared in the series Ultraman Mebius.
On a normally quite day, the sky began to rain blood-red rain. It covered everything in sight. That night, GUYS members Mirai and Ryu were sent out to investigate. Suddenly, out of nowhere, the sky seemed to crack open like glass, a large figure loomed over them! It unleashed two beams of energy at them from its nose, but both managed to dodge. Ryu tried to shoot his weapon, but the creatures eye glowed bright blue, and an energy wave came from it, and imprisoned Ryu in an orb of some kind. Mirai tried to turn into his Ultra form, but the creature let loose with another nose blast. He dodged the blast, but the resulting explosion knocked him down and injured his left arm. The creature then seemed to absorb Ryu into his eye, and then disappeared, as the night sky seemed to come back together again. Mirai blacked out, and whoke up in the GUYS HQ, with Ryu standing there as if nothing had happened! However, Ryu was being controlled by Yapool, who was behind the appearance of the monster. Some time later, during the testing of the new Fire Windam, the controlled Ryu used an odd device that set off the GUYS airfcraft to attack Windam. Windam tried to strike back, but he returned to his capsule. Ryu then shot Mirai in the arm, injuring it further. But his true identity was soon exposed by Captain Shingo Sakomizu. Yapool then summoned the same monster to attack. The beast broke the sky like glass yet again, and jumped out to land, and begin its attack. Konomi identified the monster as Bakushimu. While Ryu walked away and Mirai gave chase, the other members tried to attack Bakushimu with their weapons, but it was useless. Yapool threatened Mirai with the odd device, but Mirai had to choice but to shoot Ryu, thus cauding Yapool to leave, and return to Bakushimu's eye. Angered by his friend being used like that, he assumed his Ultraman Mebius form, but his left arm was still hurt, and Bakushimu easily beat Mebius to the ground. GUYS, however, stepped in and fired their weapons at close range, in order to give Mebius enough time to switch to Brave Mode. And, with one mighty slash, Bakushimu was destroyed by his blade. Unfortunately, Yapool was still alive. Days later, appearing out of the sky and without warning, the next of the Chouju made its appearance from the same mysterious dimension that Bakushimu came from: its name was Doragoris. He instantly began attacking the surrounding area with a blast of his red energy bolts. GUYS quickly flew into action, attacking the monster with their aircraft's weapons. Doragoris eventually gave up, and returned to his odd dimension before GUYS could land any more blows. Later, while George stayed in a hotel room with his "girlfriend," he heard her scream, and rushed over to see a large dragonfly on her, which was actually Doragoris! George tried to swat it away, but it turned into a purple gas, and entered her body. When she awoke, she hit George with a blast of energy from her eyes, which knocked him out. Later, he met her again, and discovered she was under the control of Yapool. After a failed attempt to destroy a new weapon of GUYS, Doragoris and Yapool left her body, and manifested itself into its normal form outside, with Yapool intact. In no time flat, GUYS was all over the monster, attacking it with their handguns. Doragoris shot an eye bolt at Mirai, who was caught in the explosion, but was still able to turn into Ultraman Mebius. The two titans fought hard, with Mebius seeming to have the upperhand, until Doragoris managed to knock down Mebius, and jump on top of him, grabbing his face with his hand. GUYS knew they had to act fast, since Doragoris was known for tearing the flesh off others with ease. George blasted Doragoris in the face, which gave him the chance he needed to use his new beam weapon: the Mebium Infinity Beam, which blew Doragoris clean off his feet! The Chouju then tried to escape using his dimension breaking powers. While Mebius switched to Brave Mode, George tried out the new weapon: The Meteor Overdrive, which evaporated the shattered dimension, closing Doragoris' window of opportunity. Mebius then used another new beam weapon: the Infinity Cross-Beam, which destroyed Doragoris completely. But Yapool had one more trick up his sleeve. Then one day, Velokron appeared suddenly in his hole while Captain Shingo was out and about. He tried to prevent its appearance by shooting the hole with a new gun that could close the holes made by Chouju. It worked, but not before Velorkon fired a missile at him. He was caught in the explosion, and fell unconscious while Velokron disappeared. Much, much later, Velokron reappeared in an open area near GUYS HQ, while they were still developing a new weapon, as well as converting their HQ into a flying airbase. GUYS attacked Velokron with their aircraft, but their missiles and gun blasts were all nullified by Velokron's endless barrage of missiles. Suddenly, the sky began to crack like glass, with a purple glow to it: The Yapool were trying to break through! GUYS flew in to get rid of it, but Velokron fired missiles at them. Luckily, Ultraman Mebius appeared, and stopped the attack. The Chouju put up a good fight, but was easily beaten in the end, as GUYS used its new weapon to close the nearly open dimension hole for good, preventing any more Chouju from appearing, as well as the Yapool. Mebius then used his Mebium Beam, and destroyed Velokron; ending the attack of the final Chouju for good.
The gas monster Gadiba was first released by a mysterious man dressed in black, who was really Yapool. Yapool had Gadiba dig itself into an open field of rocks, and bring Red King back to life! Gadiba then entered its body and gave it new abilities. After Red King was revived by Gadiba, he began kicking and thrashing the rocky area all around him. GUYS quickly detected it, and set out. As they arrived, Red King began tossing rocks at them, as it had no other means of attacking airborne foes. Their weapons proved useful, and Red King was soon out of rocks. But it quickly smashed a mountain and created more, which it continued to toss at the GUYS aircraft. As Red King raised a large boulder, GUYS managed to shot his hand, causing him to drop it out his foot! Red King screamed in pain, and kicked the offending boulder in frustration, but this only hurt his foot more. GUYS closed in, but Red King was not beat yet; using its thick tail and powerful legs, Red King launched himself into the air, straight at the GUYS main aircraft. Lucky for GUYS, Mirai was onboard that aircraft, and turned into Ultraman Mebius. He swiftly kicked Red King, still in mid-air, and the lumbering behemoth fell to the ground below. Red King got right back up, however, and the two titans battled. Although stronger than the original Red King, Mebius had little trouble dealing with this revived Red King, as he easily kncoked it into a mountainside, where its head became stuck. Red King eventually managed to free itself, but was too dizzy to continue fighting, and Mebius finished it off with his Mebium Beam. But the body was not destroyed, and suddenly, the gas monster Gadiba left Red King's body, and created a series of rings around it. Upon re-entering, Red King morphed into Gomora! Gomora got to its feet and stood tall, roaring loudly. Mebius, weak from his fight with Red King, now had to face a refreshed Gomora. He was easily knocked around and slammed to the ground; GUYS stepped in, and used nearly every weapon in their arsenal! Gomora's tail was blown off, but this only proved to be a problem, as it began attacking Mebius on its own! The GUYS aircraft fired a barrage of energy beams at the tail, destroying it, but Gomora still had plenty of fight left in him. Mebius' color timer began blinking, but he didn't give up; he stoop up, and transformed into his Burning Brave Mode! With one punch to the gut, and a single kick to the face, Gomora was already beaten, but Mebius grabbed and tossed him high into the air. Then, he used his Mebium Bust in combination with one of the GUYS energy weapons, destroying the ancient beast completely. Gadiba, however, was not destroyed.
After GUYS and Mebius left, it later returned to its master, Yapool, who then returned to his own demented dimension, laughing manically. Upon returning to his dimension, he met up with four other beings; Desrem, Grozam, and Alien Mephilas. These four beings were survivors of the Great Ultra War, who had come together to contemplate the destruction of the Ultra Brothers. Yapool announced he was to be the first, and only, one to confront Ultraman Mebius, as he would destroy him easily, but Desrem wanted to kill Mebius himself. Yapool teleported away, and just as Desrem was about to give chase, Mephilas stopped him, saying they should wait and see what Yapool will do first. Mirai had gone on a walk in the park with a girl he'd met, but Yapool was spying on them, disguised as a human once more. He held a clutch of ballons with him; these looked innocent, but had devious powers. Yapool finally confronted Mirai, as he was dealing with an annoying, smug reporter, revealing his true identity as Yapool. But rather than fight him, he released a red ballon with gold stripes into the sky. The ballon opened up a dimensional hole, and from it, Ace Killer emerged! Yapool teleported to a safe distance to observe, as Ace Killer made his way toward Mirai, crushing anything in his path. The reporter made a hasty getaway, but Mirai stayed with the girl, telling her to run, and that he'd take care of Ace Killer. Mirai ran off to transform into Ultraman Mebius, but unknown to him, she followed him, and witnessed his transformation. Mebius confronted Ace Killer, who proved to be a much better fighter. Things only got worse as Yapool called Gadiba into action. The little gas monster leaped into Ace Killer's body, and gave him new abilities; he was now Mebius Killer! Yapool ordered Mebius killer to first use the Mebium Beam; placing his left palm over the green pendant on his right forearm, Mebius Killer charged his hands with energy, and performed the Mebium Beam. It struck Mebius' body, but he sidestepped most of it. Yapool, laughing, ordered him to fire it again, but this time, Mebius fired his own Mebium Beam, and the two were evenly matched. Yapool then ordered Mebius Killer to use the Mebium Blade, which formed out of his green pendant. Mebius pulled out his blade as well, but Mebius Killer was stronger still, and outmatched him. Finally, Yapool ordered him to use the Mebium Bust. The ball of fire struck Mebius with great force, and Mebius fell to the ground as Yapool laughed. Mebius tried to get up, but he was too weak. That's when the girl ran up and spoke to Mebius; she believed in him and his strength. Mebius wouldn't give up now, and he got back up to fight once more. This time, however, Mebius was winning. Mebius Killer grappled with Mebius, and was overpowering him. That's when Mebius pulled out his newest power; his body began glowing red, and then he engulfed Mebius Killer and himself in flames! It was Mebius' version of the Ultra Dynamite move Ultraman Taro uses; the Mebium Dynamite! Mebius Killer groaned in agony as Mebius' flames burned his flesh, but Mebius kept a good grip on him, and finally, with one last burst of power, Mebius caused the finishing explosion, destroying Mebius Killer once and for all.
Mebius later returned to human form, and the girl ran up to see if he was ok. The smug reporter reappeared, saying he knew Mirai was hiding something, referring to his Ultraman form. Just then the ground opened up and all three fell into the deep, dark abyss; Yapool's trap. When they awoke, they were in a twisted, futuristic world, in which Tokyo was in ruins. As they enetered the city, Yapool appeared before them, and began toying with the reporter, using his psychic powers to shove and choke him. Then, he released him and told him he'd allow him to go free, back to his world, if he shot and killed Mirai of the girl. he presented him with a large laser gun, and the reporter took aim and fired at Mirai. However, Mirai created his energy shield and protected the girl and himself until the reporter ran out of ammo, and Yapool shoved him aside. The reporter was freaked out at what Mirai was doing and how he had such powers, and was too afraid to approach him. Mirai then challenged Yapool to fight, of which he gladly accepted. Yapool assumed his giant form, and Mirai assuemd his Ultraman Mebius form. Yapool told Mebius that as they spoke, at this very moment, GUYS were stranded on the moon, and were about to be slain by the moon Chouju Lunaticks, and he laughed with much evil in his voice. Mebius and Yapool fought, but it was clear who had the advantage, as Yapool used his psychic hold to swing and toss Mebius every which way, as well as slashing him with his blade hand. Mebius was still weak from his encounter with Mebius Killer, and could barely fight back. Yapool continued to taunt and cackle at Mebius for being so weak, and he began firing energy blasts from his balde, which tore into Mebius' flesh.
But like before, the girl walked toward Mebius, and continued to speak of how he was an Ultraman, and how he could overcome this obstacle. Yapool, sick of hearing her voice, blasted the area in front of her, nearly killing her. Mebius tried moving, but was too weak, and he collapsed, with his eyes growing dark. It was then that Hokuto Seiji, Ultraman Ace's human host, spoke to human through his mind. He said that if he has someone that is precious to him, he can and will overcome any foe. Mebius' power and spirirt were restored, and much to Yapool's surprise, he stood up once more, and assumed his Burning Brave Mode. This time, the tide of the batle turned, as Mebius went on an all-out attack on Yapool with intensity never before seen in an Ultraman. After Mebius slammed him to the ground, he used his Mebium Bust, and with all his might, tossed it at Yapool. However, Yapool was not destroyed yet, but he was indeed dying. His last words were that of informing Mebius that more foes, even stronger, would come, such as Desrem, and Grozam. then, he fell to ground, and his body exploded into dust. Yapool was finally finished. Grozam, back with Mephilas, exclaimed that Yapool was killed. Mephilas, however, did not care, and proceeded to tell Grozam that Desrem had already left for Earth by himself.