Dantalion is the 71st demonic spirit of the Ars Goetia and a Great Duke of Hell. He appears as a man with a large number of different faces, resembling both men and women, and holds a book in his right hand.
His office is to teach all arts and sciences to anyone and to declare the secret agreements of anyone. He knows the thoughts of all men and women and can change them as he pleases at will. He can also cause the love of a person for another and show a person to the summoner no matter what part of the world that they are in.
"One of the 72 demons of the Goetia. He is a duke with many faces that change constantly. He holds a heavy book in his right hand which has the thoughts of all living beings, past, present and future, written in a language only he can read."
—Shin Megami Tensei: Strange Journey compendium
Dantalion is mainly found on Sector Eridanus a random encounter on the 2nd and 3rd floors. There is a Dantalion NPC on the west side of the top floor of Eridanus, reached after getting the Gate Search C from Ryan. It gives the side-quest "Tales of Investigation" and will regularly employ the protagonist to be his proxy explorer across the Schwarzwelt, paying him to fully map several floors of each sector. Once every sector has been fully mapped, he will gratefully hand over a cache of Incenses to the protagonist.
Shin Megami Tensei IV[]
Known as Dantalian, he appears in the Challenge Quest, "Hunter Tournament Prelims," while acting as support for the final challenger. Dantalian also appears in the "Training Battle 3" Challenge Quest alongside an Oni. Flynn must defeat the pair without having their attacks reflected and finish the battle in 3 turns. In order to do this, Flynn must use the Blight skill before Dantalian can use Tetrakarn. Swapping in Zhen to use Pandemic Bomb will also lower the pair's damage output.
Dantalian appears in the New Game Plus Challenge Quest, "Slay the Demon in Hiding." Talking to the baker at the bakery in Mikado Castle has him state his desire to learn more. He will transform into Dantalian, telling Flynn that he doesn't care if he becomes a demon as long as he learns. In the battle, Dantalian's personality surfaces, saying that those who seek to learn become nourishment for him and in turn have their wishes granted. During the battle his face becomes the baker's, and asks Flynn to stop, as he only wants to learn. This is a trap and agreeing will have Dantalian call Flynn a fool. The demon is surprised at his defeat, unable to understand how even with his infinite knowledge that he could be defeated by a mere human. Dantalian's final words are in the baker's voice, asking if it's so wrong to want to know.
Shin Megami Tensei IV Apocalypse[]
"One of the 72 demons of the Goetia. He is a duke with many faces that change constantly. He holds a heavy book in his right hand which has the thoughts of all living beings, past, present, and future, written in a language only he can read."
Dantalion, a demon who mocks humanity's materialism, is fought in the Museum. He petrifies Rei Reiho and takes her to a room across from where Dantalion is fought. During the battle against Dantalion, the protagonist can stun him for three turns by using the art he can take from the museum.
Giten Megami Tensei: Tokyo Mokushiroku[]
Dantalion serves as the governor of a labor camp in Shinjuku, and is fought multiple times throughout the game.
Ayato first encounters him shortly after escaping Hatsudai Shelter. He approaches Ayato disguised as a human and offers to take him to safety, but Newton immediately sees through the disguise. Realizing that his cover was blown, he attacks, but is ultimately driven off by either Pentagramma members or Ayato himself.
He confronts Ayato again when Pentagramma raids his labor camp. Despite being much stronger, Ayato defeats him again, and he flees.
He's fought for the last time in Bael's Castle, after Ayato retrieves Yuuka's head.
Devil Survivor 2: Record Breaker[]
"One of the 72 demons of the Ars Goetia. He is a powerful Great Duke of Hell, with the ability to change his face into that of all men and women. In his hand is heavy sic book that only he can read, within which is written the past, present, and future thoughts of all living things."
—Devil Survivor 2 compendium
Part of the first SpotPass group of demons, Dantalian is a special fusion requiring Orcus and Toubyou.
Shin Megami Tensei: Liberation Dx2[]
"One of the 72 demons of the Goetia. He is a duke with many faces that change constantly. He holds a heavy book in his right hand which has the thoughts of all living beings, past, present, and future, written in a language only he can read."
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