Poseidon

is the main antagonist of Kamen Rider OOO: Ankh's Resurrection, The Medal of the Future and The Leading of Hope. He was a Greeed from the future who possessed Michal Minato and became .
==History==
===Movie War Mega Max===
Poseidon is a Greeed formed from the Core Medals that traveled 40 years into the future after Kyoryu Greeed's demise and entered Michal's body.
By possessing Michal, he receives the three main medals and the Poseidon driver that the Kougami Foundation in his time created. Michal can transform into Kamen Rider Poseidon, but the many-core medals from the past entering his body when he gave up hope, made the three Core Medals of the future sentient and evil.
Poseidon arrives at the present time in the body of Michal coming out of a black hole. He then encounters soldiers and scientists of the Kougami Foundation and shows his combat prowess by being unaffected by the bullets fired at him and he quickly kills everyone there. He then has a brief encounter with Kousei Kougami through a video call asking who he was in which he replied, "Kamen Rider."
He is later seen rampaging through the streets by summoning Kuzu Yummy hordes to attack civilians. Yumemi. Ankh, disguised as Eiji, appears to halt his rampage. "Eiji" gets taken out by Poseidon's Rider slash, and Erika Satonaka begins shooting Poseidon with Birth Buster instead of the Yummies, while Akira Date appears to transform into Kamen Rider Proto-Birth. Shintaro Goto also joins the fight by arriving on the Ridevendor and transforms into Birth. Poseidon makes quick work of the two Kamen Riders, leaving them seriously injured and their Birth Drivers damaged. Goto interferes by using a Breast Cannon attack against Poseidon, but failed.
Still using the "Eiji" disguise, Ankh enacts a surprise attack on Poseidon and extracts OOO's Main Core medals from inside Poseidon. The real Eiji Hino transforms into OOO begins to fight. OOO initially had the upper hand, but when Michal briefly regains control of his body, it allowed Poseidon to begin rebelling against his host and results in them both running away.
Poseidon, who has now regained control, orders Yummies to attack International Cuisine Restaurant Cous Coussier. In the guise of Michal, he later transforms into Kamen Rider Poseidon to fight Eiji and Ankh. Eiji attempts to appeal to Michal's humanity still trapped by Poseidon and manages to get him to regain control of his own body.
Michal explains how he was unable to transform into a Kamen Rider in his time period due to a fear of water and how he received Kougami Foundation Core Medals that became corrupted by the Core Medals of the past entering his body. Poseidon later regains control of Michal's body while everyone was asleep and tries to attack Ankh, but is ambushed by OOO Sagohzo combo. Ankh ends up extracting Core Medals from Michal which allows Poseidon to form a separate body of his own and the process frees Michal from his grasp. Later on, Poseidon attempts to time travel using another black void in order to continue his desire to fight with any Kamen Rider. Eiji and Ankh appear to put a stop to his plans, but are unable to do so. Goto and Date also appear as backup.
Michal regains his self-confidence and transforms into Kamen Rider Aqua to stop Poseidon. After Aqua's Oceanic Break and OOO Tajadol Combo Prominence Drop, Poseidon is defeated. Eiji and Hina Izumi collect the medals, but the two are caught off guard by an explosion as Lem Kannagi takes away the Poseidon Core Medals for his Super GingaOh driver.
===The Sorcerer's Apprentice===
He appeared in The Sorcerer's Apprentice as part of a crossover story of Kamen Rider Wizard and Kamen Rider OOO.
===Type HIGH SPEED! The True Power! Type High Speed is Born!===
Kamen Rider Poseidon makes an appearance with other Riders and Kaijin monsters, when Shinnosuke Tomari and Kiriko Shijima discover the knock-off versions of Televi-Kun, an abandoned warehouse after they meet Roidmude 027. 
==Video Game appearances==
===Kamen Rider Battle Ganbaride===
Kamen Rider Poseidon appears as a playable character in Kamen Rider Battle: Ganbaride.
===Kamen Rider Riderbout===
Kamen Rider Poseidon appears as a playable character with the other Heisei and Showa Kamen Riders in Kamen Rider Riderbout.
===Super Hero Generations===
Kamen Rider Poseidon is a boss with others villains of the Heisei era in Super Hero Generations.
===Kamen Rider Buttobasoul===
Kamen Rider Poseidon is a playable character in Kamen Rider Buttobasoul.
==Personality==
Typical for a Greeed, Poseidon is a ruthless entity driven solely by its personal desires, being highly arrogant and cunning in nature. Wishing to fight against every Kamen Rider throughout history, Poseidon gleefully attacked any that stood in his way, stating that he had no sense of mercy whatsoever. Despite his boastful attitude, Poseidon had no qualms using underhanded methods in battle, focusing solely on defeating OOO and his allies. 
==Powers and Abilities==
*Possession: Like all Greeeds, Poseidon is a sentient entity that can possess humans to use as hosts.
*Superhuman physiology: Poseidon has superhuman strength and speed, simultaneously overwhelming Birth and Proto-Birth with ease.
*Kuzu Yummies: By using Uva's Core Medals, Poseidon is able to summon Kuzu Yummies to serve him.
*Temporal freezing: Being created with a set of Core Medals from the future, Poseidon can halt time itself if needed.
*Aquakinesis: As a water-based Greeed, Poseidon can shoot powerful bursts of water through his Deepest Harpoon.
==Kamen Rider Poseidon==
Poseidon
<tabber>
1=
|-|
2=
</tabber>
;Rider Statistics
*Height: 204 cm
*Weight: 89 kghttps://www.kamen-rider-official.com/zukan/kamen_rider_members?page=2
;Ability Parameters
*Punching Power: 3.5 t.
*Kicking Power: 7 t.
*Maximum Jump Height: 45 m.
*Maximum Running Speed: 100 m. per 6.1 sec.
Mimicking the OOO Driver, the Poseidon Driver is activated by channeling the powers of the Same, Kujira, and Ookamiuo Core Medals, allowing one to transform into Kamen Rider Poseidon. The chest design and his driver design has an inverse triangular position, which are arranged in the order of the Same on the right (hand side of the rider), Kujira on the left (hand side of the rider), and Ookamiuo below Same and Kujira. This is unlike OOO's chest which has a vertical arrangement and a diagonal arrangement for his driver. Kamen Rider Poseidon is designed as the light blue Same Head, the dark blue Kujira Arms with a whale's head on right shoulder and whale's tail on the left shoulder, and the dark red Ookamiuo's legs. Kamen Rider Poseidon uses a crimson spear as his main weapon.
Kamen Rider Poseidon consists of the following parts:
*: The helmet.
**: One of the reinforced exoskeletons that covers the nose and mouth. Inside is a filtration function that purifies all toxins and allows breathing. Its internal structure closely resembles the gills of an aquatic creature, allowing it to breathe underwater by taking in oxygen dissolved in the water.
**: A yellowish-white, crystal-shaped extrasensory organ. It is larger and more developed than OOO's O Quartz, and can sense the flow of time and even the distortion of space-time beyond the five senses.
**: The visual organ of Poseidon, equipped with highly developed compound eyes. It can see the expressions of people at a distance of 800 meters, and even in the deep sea, where light cannot reach, it can obtain visual information based on the infrared radiation emitted by living creatures that is similar to that on the surface.
**: Poseidon's hearing organ. On the ground, it senses the vibrations of the air, but in the water, it senses the surrounding environment and movement based on the vibrations and echoes of the water.
*: The symbol of Poseidon is embodied as a plate. It also functions as armor to protect the chest.
*: A large thoracic exoskeleton that protects Poseidon's chest. Largely developed exoskeletons overlap to form thick armor, protecting Poseidon's upper body from all attacks.
*: Poseidon's shoulder exoskeleton. They protect Poseidon's shoulders along with the Whale Chest. It has both robustness and flexibility so that it does not restrict the movement of the shoulder when swinging the long spear "Deepest Harpoon".
*: An exoskeleton that protects Poseidon's forearm. The streamlined line drive makes it possible to minimize water resistance when swimming at the speed of light in water.
*: Reinforced exoskeleton-like skin that wraps the five fingers. It has powerful power and is said to tear the armor of a 20 cm thick battleship.
*: An exoskeleton that protects the back of Poseidon's hand. The line drive that covers the surface amplifies the power sent from the Core Medal and improves the punching power.
*: A reinforced exoskeleton that covers Poseidon's thighs. Although it is large, it is thin and lightweight, so it does not interfere with the movement of the lower body, and its defense power is greatly improved. In addition, when water passes through the line drive that covers the surface of the exoskeleton in water, it is discharged like a jet to convert it into a rearward propulsive force.
*: An exoskeleton that covers Poseidon's knees and shins. The knees' fin blade has a sharp tip that suppresses shape resistance to the utmost limit and has the function of increasing the speed and power of kicking in water.
*: An exoskeleton that protects Poseidon's ankles. It is composed of extremely flexible reinforced muscles inside, and can swim in the water with the same movement as the tail fin of fish.
*: An exoskeleton that covers Poseidon's feet. The sole fin blade located in the central part has the function of assisting a sudden change of direction in water and increasing mobility.
Appearances: Movie War Mega Max,Type HIGH SPEED! 
==Equipment==
===Devices===
*Poseidon Driver: Transformation belt
*Core Medals: Transformation device
===Weapon===
*Deepest Harpoon: Personal weapon
==Yummies==
*Kuzu Yummies
==Possessions==
Michal-Greeed.jpg|Michal Minato
==Behind the scenes==
===Portrayal===
Poseidon was voiced by . His suit actor was . While possessing Michal Minato, his voice is portrayed by .
===Conception===
==Notes==
*In the Complete Selection Modification toyline, Poseidon's medals would later be used by OOO to assume the new marine-based .
*Poseidon is the only Rider that doesn't appear in the promotional poster of Kamen Rider × Kamen Rider Fourze & OOO: Movie War Mega Max.
*Due to retaining the Poseidon Driver throughout Mega Max, the Poseidon Greed is the only Greeed to never transform into a Kaijin Form, assuming he actually has one to begin with.
==Appearances==
* Kamen Rider OOO
** Kamen Rider × Kamen Rider Fourze & OOO: Movie War Mega Max
***Ankh's Resurrection, The Medal of the Future and The Leading of Hope
* Kamen Rider Wizard:The Sorcerer's Apprentice
* Type HIGH SPEED! The True Power! Type High Speed is Born! 
==See also==
*Michal Minato - Kamen Rider Aqua and the host that Poseidon controlled in Kamen Rider × Kamen Rider Fourze & OOO: Movie War Mega Max.
==References==
==External links==
*Poseidon on Kamen Rider Official
==Navigation==
Category:Deceased
Category:Greeed
Category:Kamen Rider OOO
Category:OOO Riders
Category:Kamen Riders
Category:Heisei Phase 2 Riders
Category:Heisei Era Riders
Category:OOO Characters
Category:Non-human Riders
Category:Villains
Category:Movie Riders
Category:Future Riders
Category:Kamen Rider like
Category:Dark Riders