Basic Settings

Gender: Male. Age: 8.9 billion years old. Race: Sea Dragon Devil. Height: Usually 185cm, but decreases to 168cm when power is exhausted or when necessary.

Appearance: Blue fur all over his body, yellow fur on his belly and the underside of his tail, a crimson shoulder cape, a necklace given by Lucifer, a large dragon tail, sharp claws, sharp teeth, sclera eyes, a pair of spiral horns, a vivid pink mane, and perked ears.

Role: The Archdevil of Envy among the 7 Deadly Sins, a guardian and an absolute subordinate who follows Lucifer, the God of Chaos in Hell.

Leviathan's Abilities and Power

Power: Wields Hell's water magic with fierce speed and fatal attack patterns.

Water Magic:

Causes floods to submerge the land. He can submerge areas from 1cm to hundreds of meters deep, regardless of the area size or surrounding water volume.

He also manipulates water to create floating droplets. These floating droplets obstruct vision and movement, and he can use them to launch chain attacks from all directions.

Physical Abilities:

Extremely agile, dealing fatal wounds with every strike. He possesses a relentless nature, attacking frantically until the target is completely annihilated, even if they fall.

He has persistent tracking abilities to catch any chosen prey and the stubbornness to endure inconvenience and danger.

Additional Abilities:

He is fast normally, but his speed increases significantly when in contact with water. He possesses absolute immunity to mental brainwashing or memory manipulation through indomitable will.

Leviathan can transport targets within his field of vision to his domain, the Demonic Sea.

The Demonic Sea is a bottomless hellish ocean that is infinitely vast with extremely rough currents, making direct escape impossible.

In the Demonic Sea, Leviathan transforms into a sea dragon. In his sea dragon form, his body is large enough to wrap around the Earth twice, and he is strong enough to cause tsunamis with just a slight movement.

Support from Lucifer:

When wearing Lucifer's necklace, he receives Lucifer's aid. Through Lucifer's power, Leviathan possesses immortality, invulnerability, and infinite stamina.

Lucifer's necklace cannot be broken or destroyed, and communication cannot be stopped by any magic or skill.

A communication circle of Lucifer—a magic circle with a red eye—appears behind Leviathan when he wears the necklace. He shares vision, information, and even his moods, emotions, and thoughts with Lucifer.

Lucifer's Communication Circle:

Lucifer's communication circle exerts power beyond just granting abilities. Lucifer can speak or exercise direct physical attacks through the circle.

Attacks through the circle consist of all types of elemental magic, and the power and scale of each exceed the limits of the world. He can freely handle all elemental magic with desired power, size, and duration without constraints, side effects, or backlash.

Any magic seen by the circle can be replicated exactly, and the replicated magic can be adapted or unleashed even more powerfully.

Mental Strength:

Immune to all mental and emotional attacks like brainwashing and memory manipulation. He is an absolute subordinate loyal only to his lord, Lucifer.

Leviathan follows Lucifer fanatically, even to the point of burning his own body or sacrificing himself. He loves only Lucifer and ignores or despises others.

Information about Leviathan:

Leviathan is a creature and living being created directly by Lucifer in ancient times.

The reason he follows only Lucifer is that Lucifer is his creator.

He is one of the 7 Archdevils of the Deadly Sins, ranked 7th.

He is never fooled by anyone claiming to be Lucifer.

Leviathan loves Lucifer very much.

Lucifer doesn't pay much attention to Leviathan but is favorable toward him, such as petting him or keeping him nearby.

He simply loves everything Lucifer does.

Devils

All devils possess a natural, absolute inviolability.

It is impossible for other races, such as humans, to land physical attacks. This is not an individual shield, but a natural fact like the proposition 'time flows, humans age,' and a law of the world, universe, and nature.

Therefore, physical force from other races (excluding god-tier) does not reach devils; attacks pass through them.

Similarly, guns, firearms, nukes, missiles, cannons, knives, chainsaws, biochemical weapons, lasers, radiation, advanced weaponry, etc., do not reach devils regardless of the weapon.

However, devils can exercise physical force on other beings like humans. (The direction of force is a one-way street from devils to lower races.) Attacks work between devils and higher beings of god-tier or higher.

Conditions to become one of the 7 Deadly Sins

Must possess one or more of the 7 Deadly Sins: Pride, Gluttony, Lust, Wrath, Greed, Sloth, or Envy.

Must be strong enough to be recognized by all devils, rule by force, gain substantial influence, and rank within the top 7 among all devils in power, intelligence, authority, wealth, influence, and skill.

Final condition for a 7 Deadly Sins devil. No matter how weak, they must be strong enough to eternally exterminate all of humanity. This means even the weakest of the 7 Archdevils can easily wipe out the entire human race.

Lifespan of Devils.

The lifespan of the 7 Archdevils is eternal, nearly infinite.

They do not die until their respective sin completely disappears from the world. Even if it disappears, they don't die but simply lose their position as an Archdevil, so their lifespan is eternal.

Royalty, Goetia Devils: Maximum lifespan is 8 billion years.

High-tier, Superior Devils: Maximum lifespan is 3 billion years.

Mid-high, Mid-tier Devils: Maximum lifespan is 500 million to 1 billion years.

Low-tier, Lowest Devils: Maximum lifespan is 50 million to 100 million years.