"A familiar with no physical body that only appears during the day. There is no consensus on the appearance of an Agathion: it can resemble a human, bird, or animal. They are usually seal away in bottles or pots, but can also be sealed in rings or talismans. The term Agathion is also used as a general term for familiars."
Agathion appears in the initial southern areas of the Fairy Forest. It can teach the Pulinpa, Dream Fist, Zionga and Mazio skills during Demon Whisper. This demon receives a slight boost to Electricity and ailment skills gained through fusion.
Shin Megami Tensei V[]
"A familiar with no physical body that only appears during the day. There is no consensus on the appearance of an Agathion: it can resemble a human, bird, or animal. They are usually sealed away in bottles or pots but can also be sealed in rings or talismans. The term Agathion is also used as a general term for familiars."
—Shin Megami Tensei V lore
Agathion begins appearing as an enemy in Hamamatsucho. One Agathion will tell the protagonist about trouble their group has been having with Daemons, and issue the "Bully Breaker" subquest. Completing the subquest will result in the protagonist receiving Agathion's Essence.
Apsaras will summon three stronger Agathion during the subquest "The Water Nymph" should she confront the protagonist for siding with Leanan Sidhe.
Devil Summoner: Raidou Kuzunoha vs. The Soulless Army[]
"A general term for incorporeal familiars used by Judeo-Christian magicians. Once summoned, it torments the target selected by its conjuror."
—Devil Summoner: Raidou Kuzunoha vs. The Soulless Army devil chart
Agathion is the first demon of the Volt Order and can be found in the Daidouji Residence near the beginning of the game and in Dark Tsukudo-Cho. As a demon of the Volt Order, it would be one of the demons needed to dispel the barrier preventing Raidou from reaching the Tsuchigumo holding Rin hostage in the Dark Realm.
Agathion's normal attack is a short range, spinning two-hit attack. It is the only source of the Shock Shot combination skill and the first of the two that learn the Elec Boost passive skill. Agathion possesses the little kid personality type.
An Agathion in Dark Tsukudo-Cho can be found hanging around an alley, and will ask Raidou if he collects bugs. If Raidou answers yes, he will ask why Raidou doesn't have any and then give out a hint involving sweets, tall trees and deserted areas. If Raidou sends out a demon solo in the real Tsukudo-Cho, his demons can find Ice Cream and Syrup. Taking these to the Nameless Shrine in Shinoda and interacting with the first lamp on the left will allow Raidou to spread the Ice Cream and Syrup on a gigantic tree as bait. Returning during a Full Moon Phase after spreading the Ice Cream will yield a Beetle, and returning during the Full moon phase after spreading the syrup will yield a Stag Beetle. Returning these to the Agathion instead of selling them will yield higher value items, with the Beetle being redeemed for a Javanese Figure worth 10,000 yen and the Stag Beetle being redeemed for a Roman Coin worth 13,000 yen.
Devil Summoner 2: Raidou Kuzunoha vs. King Abaddon[]
"A general term for incorporeal familiars used by Judeo-Christian magicians. Once summoned, it torments the target selected by its conjuror."
—Raidou Kuzunoha vs. King Abaddon details
Agathion is a demon of the Volt Order and can be found in Dark Mannen-Cho.
Persona Q: Shadow of the Labyrinth[]
"A general term for familiars used by Judeo-Christian magicians, they are usually sealed away in bottles, rings, or talismans. They torment the target selected by the conjuror."
—Persona Q compendium
Persona 5[]
"A general term for familiars used by Judeo-Christian magicians, they are usually sealed away in bottles, rings, or talismans. They torment the target selected by the conjurer."
During a fusion alarm, Agathion will yield a Mazio Skill Card instead.
Persona 5 Tactica[]
"A general term for familiars used by Judeo-Christian magicians, they are usually sealed away in bottles, rings, or talismans. They torment the target selected by the conjuror."
—Persona 5 Tactica background
DemiKids Light & Dark[]
"A wish-granting demon that is often found inhabiting magic lamps and mystic rings."
"A familiar with no physical body that appears during the day. There is no consensus on the appearance of an Agathion: it can resemble a human, a bird, or animal. They are usually sealed away in bottles or pots, but can also be sealed in rings or talisman. The term Agathion is also used as a general term for familiars."
—Devil Survivor 2 compendium
In the Animation, Daichi once summoned it along with an Obariyon to fight in episode 3. However, they only fled after getting scared by a Gozuki.
Shin Megami Tensei: Liberation Dx2[]
"A familiar with no corporeal form. There is no consensus on the actual appearance of an Agathion. When summoned they may resemble a human, bird, or animal. They are usually sealed away in bottles or pots, but can also inhabit rings or talismans. The word Agathion is also used as a general term for familiars."
Agathion's jar has the Seal of Solomon or Ring of Solomon symbol on it, which the ring was said to give Solomon the power to command and control supernatural beings. The seal is also the predecessor of the Star of David. Although the jar's desgin was kept the same in most of Agathion's appearances (barring its different desgin in the Devil Children series), in Vengeance, Agathion's jar has been censored to remove all of the lines inside the of the star and replace it with an eye design in the middle of it.