"...'Tis no worth in conversation. A lamb's voice is but mere bleating before the sound of my trumpet, like the falling leaves... What shall cause the downfall? The stars, the Earth, or the world of humans? Now, singest thou to me with the voice of thy soul, that thou might keep the world from ending..."
"Angels said to sound the trumpets at the apocalypse. Each trumpet brings more plagues and disasters, turning earth into a land of death and suffering."
The Trumpeter is based on one of the angels mentioned in the Book of Revelation of the New Testament. It is said that seven trumpets will be sound by seven angels, and each trumpet signifies a different event or plague on Earth before the final moments leading to the Apocalypse.
"Angels that are said to be the ones to sound the trumpets at the time of the apocalypse. As each trumpet sounds, more and more plagues and disasters will occur, turning the earth into a land of death and suffering."
—Shin Megami Tensei III: Nocturne Compendium
Trumpeter only appears in Shin Megami Tensei III: Nocturne Maniacs. He is one of the fiends that the Demi-fiend must face while undertaking Lucifer's demonic trial in retrieving all of the stolen Candelabra.
Appearing as the fiend that holds the last missing Candelabrum, Trumpeter intercepts the Demi-fiend in Yurakucho Station, transporting him to another realm and challenges him to a duel. During the battle, Trumpeter introduces the Demi-fiend to his two distinct attacks, Holy Melody and Evil Melody; the former fully heals any character having the lowest percentage remaining HP to max while the latter instantly kills one character having the lowest percentage remaining HP regardless of their affinities. To stack up the odds against the party, Trumpeter will randomly kill one of the characters if all of them are in full health.
Fully healing the party and having a demon use a Physical skill to consume HP will ensure they are the one hit by Evil Melody when it is cast. Reviving that demon with a Revival Bead and then switching them in before Holy Melody is used will see them reap the benefit instead of Trumpeter.
Trumpeter first uses Holy Melody on the first turn, the Evil Melody on the fourth turn, then switch between them every four turns thereafter for the duration the battle. Defeating Trumpeter grants the Demi-fiend the final Candelabrum needed to open the Fourth Kalpa - The Candelabrum of Godliness.
The Demi-fiend can later summon Trumpeter in the Cathedral of Shadows with a Deathstone in his possession and performing a fusion that will result in a Tyrant class demon during a Full Kagutsuchi phase.
Trumpeter first appeared as a rare boss spawn within the Second Home instance before being added as one of the fiends possible for players to obtain through the 7th anniversary event. Within the Soul Prison instance, he spawned alongside Mother Harlot's second form. By defeating all three of Mother Harlot's forms, players had a chance of looting a silver statue of an angel, which granted the player the plug-in for his fusion. Trumpeter can be created through a triple fusion of Black Rider, White Rider, and Red Rider. In the Abyss Tower instance, he spawns alongside Mother Harlot again.
Trumpeter returns once again as a demon of the Fiend Race, however, he must be found first on Sector Horologium to engage and destroy him so he can be fused. He possesses highly dangerous attacks such as Horn of Fate (high chance to kill either party with Expel or Curse), though he is immune to both, preventing the attack from hitting himself, Megidolaon, and Hostile Terror, a status attack that can inflict all ailments. Like other Enemy Search enemies Trumpeter cannot be recruited through negotiation but has a unique response when talked to.
Following his defeat, Trumpeter fusion is enabled with the Fiend Converter SubApp.
Trumpeter can be found in Kiccigiorgi Forest, where the roads meet at an X. Like most of the Fiends encountered in the game, he has a 1/256 chance of spawning. His Almighty-spam mode is set by both Light or Dark Nullification. The reward for defeating him is the Refreshing Tune accessory, one of the best accessories in the game, and the ability to create him via special fusion.
Trumpeter holds the distinction of being able to learn both Heat Riser and Debilitate. The aforementioned skills are considered special and cannot be passed on to other Personas.
One of Margaret's Requests to max out the rank of the Empress ArcanaSocial Link is to create a Trumpeter with the skill Mind Charge. Even with one of the component Personas having the said skill, Mind Charge does not incorporate easily into Trumpeter's skill table. This request is much easier to complete in Persona 4 Golden, where inherited skills are selected manually.
If Trumpeter inherits Null/Repel/Absorb Physical, Null/Repel/Absorb Fire and Null/Repel/Absorb Wind (an easy task for a hexagon fusion) it becomes immune to most attacks. Along with Debilitate and Heat Riser, this is one of best Personas for defense and support especially against strong enemies or boss battles.
"Angels said to sound the trumpets at the apocalypse. Each trumpet calls more plagues and disasters, turning the Earth into a land of death and suffering."
—Devil Survivor 2 Compendium
While searching for a way to cancel Benetnasch's ability to un-summon demons, the party finds an entry on Trumpeter in JP's, and discover that its melody has unusual properties and may be able to negate Benetnasch's un-summoning ability.
They head to Bugeikan Stage to unseal it, but Trumpeter refuses to cooperate at first. Fumi Kanno then chooses to "convince" it to work with them by smacking Trumpeter with laptops repeatedly until it agrees (noting that human females are quite terrifying).
During the battle with Benetnasch, Trumpeter is summoned to block the demon revoking ability. However, the party notices that Trumpeter's waves will also prevent further summoning of demons, and thus they will have to keep their demons alive to be able to damage Benetnasch. Trumpeter also needs to stay alive during the entire battle, or all their effort will be for nothing.
Trumpeter becomes available for fusion after Benetnasch's defeat. He can only be obtained by fusing Remiel with Tzitzimitl. Like most of the Fiends in this game, he has an absurdly low amount of MP.
Trumpeter appears in the Animation as a demon summoned by Fumi. Unlike in the original game, there are less complications in summoning Trumpeter, as Fumi seemed to know about the demon's abilities and predicted Benetnasch's demon-revoking properties prior to the battle.
After Benetnasch revoked opposing demons in its range, Fumi summons Trumpeter from a far distance. Upon order, Trumpeter emanates its own frequency waves to counteract Benetnasch's own waves, which damages the "true" Benetnasch portion somewhat. However, this small victory was short-lived, as the portion containing Phecda and Merak sent out a deadly beam, obliterating Trumpeter immediately.