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The protagonist of the game, and the third Great Overlord to reign over the Underworld. He is a passionate leader who fearlessly fights for what he believes in. He was killed in the battle against Trillion, but shortly before his soul joined the dead, he was saved by entering into a contract with t... read more

The protagonist of the game, and the third Great Overlord to reign over the Underworld. He is a passionate leader who fearlessly fights for what he believes in. He was killed in the battle against Trillion, but shortly before his soul joined the dead, he was saved by entering into a contract with the necromancer Faust. Though his body is patched together, losing his powers that he had before, he remains the undisputed leader of the Underworld with overwhelming support from his citizens.

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As Overlord, Ashmedia holds the Crest of Lust. She calls Zeabolos “little Zeabolos,” and has fun with him in a teasingly seductive fashion. She posseses a particular kink where she becomes excited by hearing a dying foe's cries, and undertakes defeating Trillion while shivering at the thought of th... read more

As Overlord, Ashmedia holds the Crest of Lust. She calls Zeabolos “little Zeabolos,” and has fun with him in a teasingly seductive fashion. She posseses a particular kink where she becomes excited by hearing a dying foe's cries, and undertakes defeating Trillion while shivering at the thought of the pleasure she’ll feel from the death of such a giant enemy.

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Elma’s pet. He was originally a large beast that guarded the entrance to the Great Overlord’s castle as a watchdog. He was feared even among allies for his sharp claws and fangs, but was shrunk down due to the miasma.

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Hellhound. Elma's pet. The feared watchdog guarding the Great Overlord's castle.

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Zeabolos’ younger sister. Because of her frail disposition, she usually stays inside the Great Overlord’s castle. She adoringly calls Zeabolos, “Dear Brother,” and wishes to be of some help to him. She looks up to her older sister Fegor, who saves Zeabolos with powerful magic at critical moments.

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The girl who saved Zeabolos with the power of the Soul Grimoire. After acknowledging his unmistakable defeat, she made a deal to lend him the power to overthrow Trillion in exchange for his soul. She is pragmatic, mostly serious, and very tight-lipped about her identity. She conducts mysterious res... read more

The girl who saved Zeabolos with the power of the Soul Grimoire. After acknowledging his unmistakable defeat, she made a deal to lend him the power to overthrow Trillion in exchange for his soul. She is pragmatic, mostly serious, and very tight-lipped about her identity. She conducts mysterious research in her lab and has invented a variety of items in order to defeat Trillion.

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Zeabolos’ older sister, and the Overlord who holds the Crest of Sloth. She calls Zeabolos, "Zebo-chin", and she in turn is called “Sister.” She says little, but because she cares for her younger brother, she undertakes the task of defeating Trillion. She’s extremely lazy and is always sleeping, but... read more

Zeabolos’ older sister, and the Overlord who holds the Crest of Sloth. She calls Zeabolos, "Zebo-chin", and she in turn is called “Sister.” She says little, but because she cares for her younger brother, she undertakes the task of defeating Trillion. She’s extremely lazy and is always sleeping, but she actually possesses powerful magic that can surpass even Zeabolos’.

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The Overlord who holds the Crest of Envy, and Zeabolos’ childhood friend. In the presence of others, she calls Zeabolos “Great Overlord” and maintains a respectful distance. When the two are alone, however, she calls him by name and fawns over him to no end. She despises Trillion from the bottom o... read more

The Overlord who holds the Crest of Envy, and Zeabolos’ childhood friend. In the presence of others, she calls Zeabolos “Great Overlord” and maintains a respectful distance. When the two are alone, however, she calls him by name and fawns over him to no end. She despises Trillion from the bottom of her heart for taking Zeabolos’ life, and that feeling impels her to fight it. When Zeabolos seems to be having a fun conversation with someone else, she will silently radiate intense hostility towards the other person.

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As Overlord, Mammon holds the Crest of Greed. She’s a selfish wanderer with a brazen personality. She decides to take on the role of fighting Trillion with the prospect of gaining all the wealth in the Underworld as the Great Overlord. Originally, her role was to oversee the Gate of Hell, but prior... read more

As Overlord, Mammon holds the Crest of Greed. She’s a selfish wanderer with a brazen personality. She decides to take on the role of fighting Trillion with the prospect of gaining all the wealth in the Underworld as the Great Overlord. Originally, her role was to oversee the Gate of Hell, but prior to Trillion’s attack, she abandoned her post in favor of adventuring for treasure.

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Zeabolos' niece, and an Overlord who holds the Crest of Gluttony. She exudes a spirit of innocence and brightness, unlike her older sister, Ruche. In order to transform the Underworld into a kingdom of sweets, she takes on the task of defeating Trillion. She's been attached to Zeabolos ever since s... read more

Zeabolos' niece, and an Overlord who holds the Crest of Gluttony. She exudes a spirit of innocence and brightness, unlike her older sister, Ruche. In order to transform the Underworld into a kingdom of sweets, she takes on the task of defeating Trillion. She's been attached to Zeabolos ever since she was little, because he always gave her sweets.

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Zeabolos’ niece, Perpell’s older sister, and the Overlord who holds the Crest of Pride. She looks down on Zeabolos after his defeat, and undertakes fighting Trillion so she can become the Great Overlord and rule over the Underworld. Having received advanced education from a young age, she is very p... read more

Zeabolos’ niece, Perpell’s older sister, and the Overlord who holds the Crest of Pride. She looks down on Zeabolos after his defeat, and undertakes fighting Trillion so she can become the Great Overlord and rule over the Underworld. Having received advanced education from a young age, she is very proud, selfish, and domineering.

It is an aggregation of a trillion curses, with an instinct to consume the deepest parts of the three realms. It swells in size by consuming the Core of each world. The Underworld has come to know this monstrosity as “Trillion.” It is a horrifying entity that nearly plunged the Underworld into comp... read more

It is an aggregation of a trillion curses, with an instinct to consume the deepest parts of the three realms. It swells in size by consuming the Core of each world. The Underworld has come to know this monstrosity as “Trillion.” It is a horrifying entity that nearly plunged the Underworld into complete annihilation during the first Great Overlord’s reign.

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A mysterious agent of Trillion. It approaches the Great Overlord, seeking for either the lives of the Overlords or the Underworld's Core.

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Zeabolos’ older brother, and father to Ruche and Perpell. An Overlord who holds the Crest of Gloom, in charge of guarding the Great Overlord’s castle with Cerberus. He’s rightfully earned the respect of the Fallen Ones as a brave veteran with both wisdom and courage. He was the first to venture for... read more

Zeabolos’ older brother, and father to Ruche and Perpell. An Overlord who holds the Crest of Gloom, in charge of guarding the Great Overlord’s castle with Cerberus. He’s rightfully earned the respect of the Fallen Ones as a brave veteran with both wisdom and courage. He was the first to venture forth with an army when Trillion appeared, but...

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Zeabolos’ butler who serves as the Underworld’s minister. He has been a butler since the era of the first Great Overlord, and is a walking encyclopedia of the Underworld’s history, including the existence of Trillion. He is somewhat overprotective of Zeabolos, as he has taken care of him since chi... read more

Zeabolos’ butler who serves as the Underworld’s minister. He has been a butler since the era of the first Great Overlord, and is a walking encyclopedia of the Underworld’s history, including the existence of Trillion. He is somewhat overprotective of Zeabolos, as he has taken care of him since childhood.

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The monitor who watches over the Valley of Swords where the Overlords test their skills. Many beasts are corralled in the Valley of Swords, and it is the monitor's job to ensure they won't escape.

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One of the maids tending to the Overlords in the Great Overlord's castle. Timid and generally quiet. She may be quiet, but that doesn't hold back what she wants to say.

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One of the maids tending to the Overlords in the Great Overlord's castle. Very bright and jolly. Sometimes a bit too jolly...

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A blacksmith living in the city near the castle. She is skilled with strengthening weapons with magic, and can also enchant weapons with special powers through the use of Magic Seals.

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The doctor that cares for those injured from vigorous training. He often carries suspicious medicines and tries to sell them at bargain prices as a ruse to having them tested.

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A high-ranking Fallen One who helps to train the Overlords. He is a fearless, hardy veteran who excels in physical strength. His specialty is swinging a giant ball and chain set.

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She manages the maids tending to the Overlords in the Great Overlord's castle. A very reliable and experienced maid. She has a tendency to be a bit too upfront.

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The wife of the first Great Overlord Satan, and Zeabolos’ grandmother. She was once an Overlord who held the Crest of Vanity, but she died during the battle when Trillion first appeared, and is now living within the Great Overlord’s castle as a ghost. She hates it when she's called "Grandma" becaus... read more

The wife of the first Great Overlord Satan, and Zeabolos’ grandmother. She was once an Overlord who held the Crest of Vanity, but she died during the battle when Trillion first appeared, and is now living within the Great Overlord’s castle as a ghost. She hates it when she's called "Grandma" because she does not look anything like an old grandmother at all, and instead retains her young looks even after dying.

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A mechanical puppet that Faust created for mock training against Trillion. It mimics the data inputted through transformation. But despite looking like Trillion, it can't exhibit the true nature and power of Trillion due to its lack of performance.

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The nurse who accompanies the doctor as support. Beneath her looks is a rough personality that can't seem to ever insert a needle properly - though that might be on purpose.

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A waitress that works in the tavern in the city. She always has a smile on her face and a sharp tongue for those who deserve it.

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A high-ranking Fallen One who helps train the Overlords. He is a cool, calm veteran with excellent technique. He excels in delivering sharp jabs with his rapier.

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A nemesis to the Fallen Ones, and one of the 4 archangels that serves God. He fell into the Underworld covered in wounds, but recovered thanks to Elma’s dedicated care. He is in possession of a shocking truth.