Notes:
Resist - Attack hits, but causes reduced damage
Void - Attack has no effect and is completely voided
Absorb - Absorbs the attack and restores HP
Reflect - Attack has no effect and is reflected back at the user
Weak - Attack hits and knocks off more damage than a normal attack
Naoki is a rather unique individual. He is a Demi-Fiend, meaning he is a being with the body of a demon and the heart of a human. So while he looks human, he is by no means defenseless.
His current skill level is as follows:
Level: 85
Magatama: This parasitic entity contains the essence of demons, and is what gives Naoki his power; without it, he becomes severely weakened. His currently-ingested Magatama is the Masakados Magatama, a powerful Magatama that grants him resistance to all elements (Fire, Ice, Wind, Electricity, Expel (holy spells), and Death (dark spells), with the exception of Almighty spells. Note, the actual Magatama in-game grants full Void to these elements, but to make it fair I'm just lowering it to a Resistance instead.
Skills:
Deadly Fury: Moderate physical damage to all enemies. High chance of critical.
Javelin Rain: Moderate physical damage to all enemies. May inflict mute.
Xeros Beat: Moderate physical damage to all enemies. May inflict bind.
Gaea Rage: High physical damage to all enemies. High critical odds.
Freikugel: High Almighty damage to a single enemy.
Diarahan: Highly effective healing spell for one target.
Fog Breath: Drastically decreases all enemies' Agility/Accuracy.
Avenge: 50% chance to counter enemy's physical attack, heavy damage.
In addition to his own skills, Naoki is able to summon a variety of demons so his side to aid him in battle. These are listed here, along with their strengths, weaknesses, personalities, and skills.
Pixie: "According to the local folklore of south-west England, pixies are small mischievous creatures that inhabit the countryside and woodlands and like to play pranks on humans. They play pranks on humans such as stealing their belongings, throwing things or calling out their names. While pixies usually don't cause any real harm, it is said that if someone follows the voices of pixies, they will vanish never to return."
Race: Fairy
Level: 85
Personality: Young Girl
Resist: Electricity
Void: None
Absorb: None
Reflect: None
Weak: None
Skills: Maziodyne, Megidolaon, Mediarahan, Samrecarm, Endure
Kodama: "A spirit from Japanese folklore, which is believed to live in certain trees. Cutting down a tree which houses a kodama is thought to bring misfortune, and such trees are often marked with shimenawa rope."
Race: Jirae
Level: 3
Personality: Young Child
Resist: Wind
Void: None
Absorb: None
Reflect: None
Weak: Fire
Skills: Zan, Dia, Lunge
Jack Frost: "A winter fairy of European descent. Normally an innocent creature, but if provoked, he will kill his victim by covering him in snow. It is said that he is the one who leaves those beautiful icy patterns on windows in the morning."
Race: Fairy
Level: 7
Personality: Hee-ho Child
Resist: None
Void: None
Absorb: Ice
Reflect: None
Weak: Fire
Skills: Bufu, Dark Might, Mabufu
Archangel: "Eight of the nine orders of angels. Their duty is to minister humans and deliver messages. They are at constant war with the fallen angels."
Race: Divine
Level: 18
Personality: Gentleman
Resist: None
Void: Expel
Absorb: None
Reflect: None
Weak: Ice, Curse
Skills: Tarukaja, Hama, Mighty Gust, Diarama
Pyro Jack: "Also known as Jack O’Lantern, he was an Irish farmer who persuaded Satan not to take him to hell. When he was refused entry into heaven, he wandered earth as a pumpkin-headed soul."
Race: Fairy
Level: 19
Personality: Hee-ho Child
Resist: None
Void: None
Absorb: Fire
Reflect: None
Weak: Ice
Skills: Agilao, Maragi, Lunge
Makami: "A divine beast in Japanese mythology. They are often used to ward of evil, especially thefts and fires. But, there is also a belief that it eats people. Wolves can become Makami."
Race: Avatar
Level: 24
Personality: Animal
Resist: None
Void: Fire
Absorb: None
Reflect: Expel
Weak: None
Skills: Diarama, Recarm, Agilao
Raiju: "A beast of Japanese lore, said to come down to Earth on a bolt of lightning. It usually runs through thunder clouds, but will also ride bolts of lightning down to the ground."
Race: Wilder
Level: 25
Personality: Animal
Resist: None
Void: Curse
Absorb: Electricity
Reflect: None
Weak: Wind
Skills: Zionga, Feral Claw, Shock,
Oni: "An evil monster of Japanese lore known for its hideous appearance and brute strength. They loot and plunder villages, massacring the townspeople with their iron clubs."
Race: Brute
Level: 25
Personality: Thuggish Guy
Resist: Physical
Void: None
Absorb: None
Reflect: None
Weak: Nerve
Skills: Rakunda, Rampage, War Cry, Getsu-ei
Pisaca: "A type of demon in Hindu mythology that arises from the vices of men such as criminals, drunkards, and adulterers. It enters through an opening in the body and influences its host's actions."
Race: Haunt
Level: 28
Personality: Mindless
Resist: None
Void: Death, Mind, Curse
Absorb: None
Reflect: None
Weak: Fire
Skills: Life Drain, Trafuri, Estoma, Riberama, Liftoma, Lightoma, Lucky Find, Watchful
Arahabaki: "A major deity in Shinto myth. Clay dolls were often sculpted in its image. Since it was worshipped by rebels, the dolls were came to be seen as a symbol of defiance."
Race: Vile
Level: 30
Personality: Deity
Resist: None
Void: Physical, Expel, Curse
Absorb: None
Reflect: Ice
Weak: Fire, Wind, Thunder, Mind, Nerve, Death
Skills: Mabufula, Stone Gaze, Mudo, Panic Voice
Matador: "A Spanish Grim Reaper born from the pursuit of aesthetics killing. With his terrifying sword Espada, he now preys on humans rather than bulls."
Race: Fiend
Level: 30
Personality: Unique
Resist: None
Void: Wind, Expel, Death, Ailments
Absorb: None
Reflect: None
Weak: None
Skills: Mazan, Andalucia, Dekunda, Red Capote
Orthrus: "The two-headed pet dog belonging to the giant Geryon, in Greek myth. He guarded a herd of red oxen, and fought Hercules."
Race: Beast
Level: 34
Personality: Animal
Resist: None
Void: None
Absorb: Fire
Reflect: None
Weak: Ice
Skills: Fire Breath, Stun Claw, War Cry, Hell Fang
Horus: "An ancient god of Egypt whose eyes are the sun and moon. Revered by some as the chief god, and often depicted as a hawk or falcon."
Race: Deity
Level: 38
Personality: Old Man
Resist: Physical
Void: None
Absorb: None
Reflect: Hama
Weak: Death
Skills: Watchful, Mahama, Dekunda, Liftoma, Mediarama, Violet Flash
Yomotsu-Ikusa: "Izanami sent them after Izanagi at Yomotsu Hirasaka, the entrance to the Yomi, the Japanese land of shadows. The army of these monsters is led by Yomotsu-Shikome."
Race: Brute
Level: 44
Personality: Old Man
Resist: None
Void: Nerve
Absorb: None
Reflect: None
Weak: Electricity
Skills: Arid Needle, Analyze, Mighty Gust, Mudoon
Seiryu: "One of the Ssu-Ling, celestial creatures in Chinese myth. It represents the direction east, the season of spring, and the element of wood."
Race: Dragon
Level: 44
Personality: Old Gentleman
Resist: None
Void: Expel
Absorb: Ice
Reflect: None
Weak: Fire
Skills: Stone Bite, Ice Breath, Fog Breath, Mabufula
Ose: "One of the 72 demons of the Goetia, he is known as the President of Hell. He can shift his shape from leopard to human, and reveals the truth behind divine mysteries."
Race: Fallen
Level: 45
Personality: Young Man
Resist: None
Void: Curse
Absorb: None
Reflect: None
Weak: Nerve
Skills: Focus, War Cry, Blight, Dragon Eye
Cu Chulainn: "A legendary hero in the Celtic folklore. His name means the 'Hound of Culainn' and his true name is Setanta. There are many tales of his exciting adventures with his spear Gae Blog."
Race: Genma
Level: 52
Personality: Young Man
Resist: None
Void: Expel
Absorb: None
Reflect: Wind
Weak: None
Skills: Zandyne, Thunderclap, Blight
Wu Kong: "Sun Wu Kong was supposedly born from a rock. He wreaked havoc and was punished by Buddha, but was eventually saved by a monk named Santsang."
Race: Fury
Level: 54
Personality: Young Man
Resist: None
Void: Physical attacks, Expel, Death
Absorb: None
Reflect: None
Weak: None
Skills: Hassohappa, Focus, Attack All
Gogmagog: "Giants said to have lived in the British Isles in ancient times. Its name means "Antagonist." They were said to be so huge that they could destroy a huge sailing barge with but a single wave of the hands. The Gogmagog constantly scared off invaders to the islands, but were eventually defeated by Brutus of Troy."
Race: Jirae
Level: 55
Personality: Data
Resist: None
Void: Physical, Ice, Curse
Absorb: None
Reflect: None
Weak: Fire
Skills: Sukunda, Tarunda, Rakunda, Tornado, Berserk, Diarama
Quetzalcoatl: "An Aztec deity, known as the "Feathered Serpent." He created humans by sprinkling blood on the bones of people from a previously created world."
Race: Snake
Level: 55
Personality: Old Gentleman
Resist: Physical
Void: Ice
Absorb: None
Reflect: None
Weak: Electricity
Skills: Stone Bite, Rampage, Glaical Blast, Fog Breath, Recarmdra
Titania: "Queen of the Fairies and wife to Oberon. She is derived from Diana from Roman mythology and is immortalized in Shakespeare's play, 'A Midsummer Night's Dream'."
Race: Fairy
Level: 57
Personality: Lady
Resist: Fire, Ice, Wind, Electricity
Void: None
Absorb: None
Reflect: Expel, Curse
Weak: None
Skills: Glacial Blast, Pulinpa, Mediarahan
Parvati: "This beautiful goddess of love is one of Shiva's wives in Hindu lore. She is always at Shiva's side and played a role in opening his third eye."
Race: Lady
Level: 57
Personality: Lady
Resist: None
Void: None
Absorb: Fire
Reflect: Expel
Weak: Ice
Skills: Medirama, Tetrakarn, Thunderclap, Holy Wrath
Girimehkala: "A giant elephant monster of Sri-Lankan mythology. It is typically portrayed as being ridden on by the evil one, Mara. Whoever looks into its evil eye is said to met with misfortune."
Race: Vile
Level: 58
Personality: Gentleman
Resist: None
Void: Death
Absorb: None
Reflect: Physical
Weak: None
Skills: Binding Cry, Chaos Blade, Dismal Tune, Shock, Debilitate, Tempest
Barong: "A mystical creature in Balinese lore. It represents good and is Rangda's eternal rival. Even if defeated, it will be reborn. The result is a never-ending struggle."
Race: Avatar
Level: 60
Personality: Animal
Resist: None
Void: None
Absorb: Electricity
Reflect: Expel
Weak: Death
Skills: Glacial Blast, Binding Cry, Iron Claw, Mediarahan, Bolt Storm
Cerberus: "The guardian hound of Tartarus in Greek myth. It is the offspring of Typhon, the giant of wind, and Echidna, the mother of monsters. Orthrus is its older brother."
Race: Beast
Level: 61
Personality: Old Gentleman
Resist: Physical
Void: None
Absorb: None
Reflect: Fire
Weak: Ice
Skills: Iron Claw, Binding Cry, Hellfire, Fog Breath, Retaliate
Rakshasa: "Demon of Hindu myth. He is an enemy of the gods, and attacks humans to feed off of them. His hideous appearance strikes fear into those who see him. Can shift his shape to deceive his enemies."
Race: Jaki
Level: 63
Personality: Young Man
Resist: Physical
Void: None
Absorb: None
Reflect: None
Weak: Elec, Expel
Skills: Tempest, Brutal Slash, Getsu-ei
Gurr: "According to Sri Lankan Buddhism, Gurr is an evil and carnivorous giant eagle that feeds on flesh. It is widely believed that Gurr is a demonization of the Hindu lesser deity Garuda."
Race: Raptor
Level: 63
Personality: Young Man
Resist: None
Void: Mind/Nerve
Absorb: None
Reflect: Death
Weak: Expel
Skills: Venom Claw, Zandyne, Bolt Storm, Mamudoon, Avenge
Samael: "A mysterious angel known as the 'Poison of God', often depicted as a serpent. Opinions differ on whether or not he is fallen, but either way, he is associated with death."
Race: Vile
Level: 73
Personality: Gentleman
Resist: None
Void: None
Absorb: None
Reflect: Expel, Death
Weak: Electricity
Skills: Mahamaon, Mamudoon, Prominence, Samarecarm, Tetrakarn, Avenge
Mithra: "An ancient Iranian god of contracts, he was revered as a sun god. At the end of time, he will descend from the heavens and raise the dead for final judgment."
Race: Deity
Level: 78
Personality: Deity
Resist: None
Void: Expel, Death, Curse
Absorb: None
Reflect: Physical
Weak: Ice
Skills: Mahamaon, Mamudoon, Debilitate, Megidola, Dragon Eye
Beelzebub: "The "Lord of the Flies" and the prince of evil, he is Satan's right-hand man. His flies carry the souls of the dead. Said to be derived from the Canaanite god, Baal."
Race: Tyrant
Level: 84
Personality: Unique
Resist: None
Void: None
Absorb: ailments
Reflect: Expel, Deatn
Weak: None
Skills: Maziodyne, Megidolaon, Death Flies