Ramuh, also known as the Fulgurian, is an Astral who appears in Final Fantasy XV. He is one of the Six and a towering wizard who controls thunder and rain. Noctis Lucis Caelum forges a pact with Ramuh after passing his trial in the Duscae region.
Like the other Astrals, Ramuh is based on a recurring summon in the Final Fantasy series. He is the staple lightning summon, and in Final Fantasy XV, he appears as a gigantic wizard with a long, white beard and small, hornlike protrusions on his forehead. He has red eyes, and he wears flowing, green robes with a high collar. Ramuh's massive size in Final Fantasy XV resembles the summon's unused concept art for Final Fantasy XIII, and the tip of his staff resembles Ixion, the lightning aeon from Final Fantasy X.
Ramuh calls out to Noctis Lucis Caelum by trapping the Duscae region in a powerful thunderstorm. Noctis is guided to pursue him by Gentiana, the Messenger of the gods. Ramuh forges a pact with the prince when his trial is passed, and he is later called upon to annihilate Niflheim troops in an imperial base. This enables Noctis and his friends to reclaim their car, the Regalia, after an encounter with Ravus Nox Fleuret. Gladiolus speculates that Ramuh's thunderstorm was also to prevent Niflheim from calling an airship to transport the Regalia, preventing Noctis and his friends from ever reclaiming it, while Noctis and his friends did his trial. This speculation is reinforced by Ramuh helping the party retrieve the car.
Noctis obtains Ramuh by completing the Astral's trial in Chapter 5. This requires him to interact with a series of special landmarks hidden throughout the Duscae region. These are guarded by Griffons, and Noctis is unable to leave until he discovers all of them. The last landmark is located at the end of Fociaugh Hollow.
The chance to summon will appear randomly while in battle, and the player can summon once per battle. Each Astral has its own requirements to be considered during the "summon roll", which happens every 10 seconds. While possible to summon during the first roll, it is rare. Ramuh's chances increase the longer the battle goes on. As he doesn't have other requirements he tends to be summoned most often. He can he summoned anywhere.
When summoned, Ramuh picks up Noctis with his left hand and wraps the tip of his staff in lightning. He uses Judgment Bolt, tossing his staff at the enemies below him to set off a massive explosion that chars the surrounding landscape. If called upon within a dungeon, Ramuh performs a different version of Judgment Bolt, during which he looms overhead while gathering electricity. The Fulgurian then summons his staff and throws it, filling the area with lightning.
Ramuh is the only Astral that can be obtained in Final Fantasy XV Episode Duscae. Noctis must interact with a tree located deep within Fociaugh Hollow. Ramuh can be called upon whenever Noctis's HP is fully depleted, and when he appears, the Astral uses Judgment Bolt to kill all targets within a wide radius.
Lahmu, who is often portrayed as a bearded man with a red sash and four to six curls on his head. Ramuh could also be loosely based on an epic Hindu poem, written by Valmiki, called Ramayana. Its protagonist is Raama (also spelled Rama), said to have been the incarnation of the Hindu god, Vishnu. The name Ramuh could be an amalgam of Raama and Vishnu.Ramuh could be based on
In the Final Fantasy series, Ramuh is an old, bearded sage with a staff who casts thunder magic. He could be based on the king Ra-mu of a supposedly sunken continent, Mu. The element of lightning could come from the Hebrew word רעם (rá'am), meaning thunder, or thunderclap. His previous name, Indra, is the name of the king of the Devas in Hindu mythology, the god of rain, lightning, and storms.