Cocytus is the guardian of the Fifth floor of Nazarick. An insectoid heteromorph, he was created by Warrior Takemikazuchi to be an honourable warrior and is tasked with keeping a cache of powerful weapons for Nazarick. He has a neutral alignment, which stands out against the many evil entities in Nazarick. An extremely skilled fighter, Cocytus is an expert at selecting the right combination of weapons for the fight, and dealing huge amounts of damage quickly. With the help of his extra arms, he is capable of wielding four of his twenty-one weapons at once, allowing him to deal the highest damage per second of any floor guardian.

The story takes place in the year 2138 when virtual reality gaming is booming. Yggdrasil, a popular online game is quietly shut down one day. However, the protagonist Momonga decides to not log out. Momonga is then transformed into the image of a skeleton as "the most powerful wizard." The world continues to change, with non-player characters (NPCs) beginning to feel emotion. Having no parents, friends, or place in society, this ordinary young man Momonga then strives to take over the new world the game has become. 
 
(Source: Anime News Network)

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A Mexican voice actor.

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Rodolfo Marinho is a Brazilian actor, voice actor and broadcaster. He is currently one of the voices on boards and voiceover at UniSom studio.


What do you do when your favorite game shuts down? Momonga decided to stay logged in right up until the very end. But when the servers go dark, he finds himself transported into the game world--and he's been transformed into his skeletal avatar from the game, awesome magical powers included! But what if he's the villain of his own story? (Source: Yen Press)

For twelve years, the virtual world of Yggdrasil has served as the playground and battlefield for the skeletal lord Momonga and his guild of fellow monsters, Ainz Ooal Gown. But the guild's glory days are over, and the game is shutting down permanently. When Momonga logs in one last time just to be there when the servers go dark, something happens--and suddenly, fantasy is reality. A rogues' gallery of fanatically devoted NPCs is ready to obey his every order, but the world Momonga now inhabits is not the one he remembers. The game may be over, but the epic tale of Ainz Ooal Gown is only beginning... (Source: Yen Press)

A compilation film recapping the first half of the Overlord anime's first season, with a few extended scenes. 
Follow veteran MMORPG player Momonga, who’s just been trapped in the world of his favorite game! Realizing the unprecedented power he commands, Momonga decides to bring glory to Nazarick and change the course of history. 
(Source: Crunchyroll)

A compilation film recapping the second half of the Overlord anime's first season, with a few extended scenes. 
Embracing his new identity and power as the fearsome overlord Ains Ooal Gown, Momonga continues to navigate the world of Yggdrasil in his quest to bring Nazarick to a new realm of glory throughout the game world. 
(Source: Crunchyroll)

The second season of Overlord. 
Continuing his quest to rule this new world, Ains begins to put the pieces in place for his conquest. But between a Lizard Man tribe uprising, and performing missions as adamantite adventurer Lord Momon, Ains has his work cut out for him! Thankfully he has his most loyal and willing subordinates to do his bidding. Nothing and no one can stop the supreme and mighty Overlord in his quest to rule all!
 (Source: Manga Entertainment)

The third season of Overlord. 
 
With his foundations now set in this new world, the first steps of Ains Ooal Gown's master plan apparent begin to come to fruition. The value of Carne village and especially the political value of his alter ego Momon are reaffirmed; the “hidden” genius of his actions is continuously met with shock and awe by Demiurge, Albedo, the rest of his guardians, and even Ains himself at his “great wisdom.” His attempts to act in a way befitting the ruler of Nazarick, continuing to further cement his guardian’s loyalty, push him ever further down the path of not-so-intentional world domination. Without human conscience due to being undead, he is motivated only to continue searching for other players from Yggdrasil and to gain power to better protect the children and home of him and his forty former companions. Lord Ains Ooal Gown maintains his mantle of Overlord and leads the Great Tomb of Nazarick unto the world stage, directly into a vicious power struggle between two great empires.
 (Source: Anime News Network)

The button appeared out of nowhere. There weren't any signs NOT to push it... so the solution is obvious, right? Is it a trap or the start of something new and exciting? The crews of Re:Zero, Overlord, Konosuba, and The Saga of Tanya the Evil will find out when they go from their world to another and get stuck in... class?! See what adorable chaos they'll get up to in this collection of shorts!
 
(Source: Funimation)

The second season of Isekai Quartet.
 
Your favorite isekai characters return for more exciting crossovers in our everyday world! This time the Shield Hero joins in, and he’s brought Raphtalia and Filo along with him. What kind of shenanigans will the crews of Re:Zero, Overlord, KonoSuba, Saga of Tanya the Evil, and now, The Rising of the Shield Hero get into together? 
(Source: Funimation)

Super deformed parody shorts of Overlord II streamed on Kadokawa's official YouTube channel.

Super deformed parody shorts of Overlord III streamed on Kadokawa's official YouTube channel.

Bundled with novel series' 11th volume.

The new anime will feature the appearance of the Pleiades combat maids, as well as the rest of the Floor Guardians. 

(Source: Anime News Network)

The fourth season of Overlord.
 
E-Rantel, the capital city of the newly established Sorcerer Kingdom, suffers from a dire shortage of goods. Once a prosperous city known for its trade, it now faces a crisis due to its caution—or even fear—of its king, Ainz Ooal Gown. To make amends, Ainz sends Albedo to the city as a diplomatic envoy.
 
Meanwhile, the cardinals of the Slane Theocracy discuss how to retaliate against Ainz after his attack crippled the Re-Estize Kingdom's army, plotting for the Baharuth Empire to take over the Sorcerer Kingdom. However, when Emperor Jircniv Rune Farlord El Nix arranges a meeting with the Theocracy's messengers at a colosseum, he is confronted by none other than Ainz himself.
 
With their secret gathering now out in the open, the emperor and his guests learn that Ainz has challenged the Warrior King, the empire's greatest fighter, to a duel. With Ainz's motivations beyond his comprehension, Jircniv can do nothing but watch as humanity's future changes before his very eyes.
 
(Source: MAL Rewrite)

The homeroom class gets sucked through a wormhole into - you guessed it! - another world where they encounter a desolate environment dominated by a rampaging magical automaton. There they meet a girl-type golem with mannerisms similar to Megumin, a woman dressed in the same military uniform as Tanya, and a man with a cane who seems to know Subaru, and hijinks ensue. 
 
(Source: Crunchyroll)

The fourth wave of parody shorts for Overlord IV airing on AT-X immediately following the main broadcast, later streamed on Kadokawa's official YouTube channel as a limited viewing and also going to be included on the Overlord IV Blu-rays. 

Note: Each episode is only available on the channel for a limited time, spanning 2 weeks long from the upload date.

A continuation of the Overlord manga.