Setanta is Cu Chulainn's given name. He obtained his more well-known alias when he killed Culann's guard dog in self-defense and volunteered to take its place ("Cu Chulainn" means "Culann's Hound").
"The childhood name of Cú Chulainn, a clever Irish hero of Celtic mythology. He wielded the holy spear Brionac and was the son of the sun god Lugh, of the Tuatha De Danann. Some suggest that he was a real historical figure. His mother was Deichtine, sister of the human king Conchobar, who doted on him as a child. When Setanta was seven, the king was invited to a party by Culann the smith. On his way, the king spotted Setanta playing at hurling. Impressed by the boy's throwing performance, he invites Setanta to come to the party as a reward. Setanta promises to come later, but the king forgets he had invited the boy, and Culann releases his guard dog into the garden to ward off intruders. Unaware of this, Setanta arrives at the party and is attacked by the dog, but chokes it to death. Seeing this, Culann the smith is beside himself with grief, but Setanta says to him, "I shall become your guard dog." From that day forward, Setanta was known as "Cú Chulainn", (Hound of Culann)."
—Shin Megami Tensei IMAGINE compendium
Setanta can only be obtained through fusion and appears in a central role in the Foreign Country in the Woods questline. Players can obtain his scarf and gear through fortune cards.
Shin Megami Tensei IV[]
Setanta appears in the Challenge Quest, Cu Chulainn's Training, where Cu Chulainn has been turned into Setanta by his master Scathach. She requests that Flynn teach Setanta the "way of the warrior" in the Bugeikan stadium. Arrogant, he proclaims that killing them will be easier than killing the guard dog as the battle starts. He is surprised when he loses, and realizes the lesson his master wished to teach him by fighting Flynn, and is returned to his true form, Cu Chulainn.
Setanta can be found in Shibuya. He can teach the Charge, Javelin Rain and Purple Smoke skills through his Demon Whisper. Setanta benefits from learning Physical, Gun, Force and support skills.
Shin Megami Tensei V[]
"A brave young man in Celtic myth. After defeating a fierce guard dog, he volunteered to take its place, thus earning himself "Culann's Hound" as his nickname."
—Shin Megami Tensei V lore
Shin Megami Tensei V: Vengeance'[]
"A brave young man in Celtic mythology. After defeating a fierce guard dog, he volunteered to take its place, thus earning himself "Culann's Hound" as a nickname."
—Shin Megami Tensei V: Vengeance lore
Setanta is a demon of the Fairy race and begins appearing as a normal enemy in Da'at: Shinagawa.
Devil Summoner: Soul Hackers[]
"A brave young man in Celtic myth. After defeating a vicious dog with his bare hands, he took up its role as guardian, and gave himself a new name: "Cu Chulainn," meaning "Hound of Chulainn.""
—Soul Hackers 3DS compendium
Setanta is a demon exclusive to the 3DS remake, available after Nemechi evolves into the leg form (female growth path), and costs 150 D-Souls. Unusually, despite being Cu Chulainn's younger form, he is actually at a higher level.
Soul Hackers 2[]
"A brave young man in Celtic myth. After defeating a local smith's fierce guard dog, he volunteered to take its place, thus earning himself "Cu Chulainn," or "Culann's Hound," as his nickname."
—Soul Hackers 2 demon info
Setanta is a demon of the Fairy race and can be found in Milady'sSoul Matrix 3F.
Persona 3 Portable[]
Setanta is one of the new Personas that have been added. He is the second lowest level Persona of the Star Arcana.
Persona 3 Reload[]
"A brave young man in Celtic myth. After defeating a fierce guard dog, he volunteered to take its place, earning him the nickname "Hound of Culann.""
—Persona 3 Reload background
Persona 5[]
"A brave young man in Celtic myth. After defeating a fierce guard dog, he volunteered to take its place, earning him the nickname "Hound of Culann"."
The Shadow of Nozomi Odo will also take the form of Setanta when confronted in Mementos during the "Part-time Job, Full-time Hell" request. When defeated, he will drop the Chinese Sweetsbook, which allows the protagonist to access Chinatown
Royal[]
Setanta has gained a resistance to Gun skills. When itemized with an Electric Chair, Setanta now yields the Rebellion Ankletaccessory, which allows the wearer to use Rebellion. During a fusion alarm, Setanta will yield the Revolution Anklet accessory instead, which allows the wearer to use Revolution.
Persona 5 Strikers[]
"A brave young man in Celtic myth. After defeating a fierce guard dog, he volunteered to take its place, earning him the nickname "Hound of Culann.""
—Persona 5 Strikers background
Setanta is the first Persona of the Emperor Arcana and begins appearing as a Shadow in the Sapporo Jail. Setanta is the subject of the "Psychokinetic Siege" request, in which the party must defeat three Setanta Shadows by striking their weakness. Fulfilling the request grants the party the Death Contract S weapon for Haru, which has an attack rating of 134 and has a low chance of inflicting the Fear status on foes.
Setanta can also be used to complete the "Prison Mail, Part 4" request, in which Lavenza asks to see a Mitra with the Regenerate 1 ability. Once Setanta learns Regenerate 1, he can be fused with either Principality from the same Jail or Archangel to pass the Regenerate 1 skill to Mitra.
Digital Devil Saga: Avatar Tuner 2[]
Setanta is a common enemy on the hostile floors of the Karma Society Tower near the C terminal.
Shin Megami Tensei: Liberation Dx2[]
"A brave young hero in Celtic lore. He was attacked by a vicious guard dog when he arrived at Chulainn manor, killing it with his bare hands. He took up its role as guardian, and adopted the name "Cu Chulainn", meaning "Culann's Hound" and swore to serve and protect until a placement was sired."
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