Ramuh

Ramuh is a recurring character and summoned creature in the Final Fantasy series. He is related to thunder and lightning, and is represented as an old man carrying a gnarled wooden staff. His attack is called Judgement Bolt.

Final Fantasy III
Ramuh can be summoned by Evokers and Summoners, and is obtained by purchasing the Level 3 Summon Magic spell Spark.
 * Mind Blast: Confuses all enemies if successful
 * Thunderstorm: deals lightning damage to a single target
 * Judgment Bolt: deals lightning damage to all enemies

Final Fantasy IV
Rydia is the only character who can summon Ramuh, and he is obtained automatically when the party fights Golbez in the Dwarves' Castle. He was translated as Indra in the Super NES release.

Final Fantasy V
Ramuh is a Level 2 Summon lives in the forest outside of Istory Village. The party must fight him as a random encounter and defeat him.

He is also encountered in the Castle Section of the Void, on the upper level, outside of the actual castle itself.

Final Fantasy VI
Ramuh, as an Esper plays a major role in Final Fantasy VI, as the guardian of Terra while she is coming to her senses in Zozo, and he is the one who sends the party to Vector in order to rescue his friends, as well as Terra's father Maduin. He then turns himself into Magicite, and costs 25 MP to summon. Bolt Fist (Judgment Bolt in the Advance Version) has a Spell Power of 50 and is unblockable. Ramuh teaches the following spells:
 * Bolt X10
 * Bolt 2 X2
 * Poison X5

At Level Up, he gives a boost of +1 to Stamina.

Mog also mentions that Ramuh told him to fight alongside the party; in the Japanese and GBA versions, Mog also says that Ramuh is the being who taught him how to speak. When the player fights Ifrit and Shiva in the Magitek Research Facility, they sense Ramuh's power and stop their attacks, implying, as in FFV, that Ifrit and Ramuh know each other.

Final Fantasy VII

 * See the Summon sequence here

Ramuh is a Summon Materia that is obtained in the Gold Saucer. The player must pick up this materia in the Chocobo Jockey Room after Barret Wallace defeats Dyne. If Cloud Strife does not pick it up then, it becomes unobtainable.

Level -- AP Needed Stat Change
 * Level 1    --  0
 * Level 2  --    10000
 * Level 3    --  25000
 * Level 4   --   50000
 * Level 5    --  70000
 * Magic +1
 * Maximum HP -2%
 * Maximum MP +2%

Before Crisis -Final Fantasy VII-
Ramuh can be summoned in battle using the appropiate Materia in this game.

Final Fantasy IX

 * See the Summon sequence here

Ramuh is an Eidolon, and once again plays a major role in the story. After Zidane Tribal, Vivi Orunita, and Princess Garnet flee Alexandria, they wind up in the Pinnacle Rocks. Ramuh reveals himself to Garnet, and she asks him for his help. Ramuh was worried about what Odin did in Cleyra, but Garnet said that it was Queen Brahne's fault. Ramuh agrees to help Garnet if she can pass his test of completing a story. If she succeeds, Ramuh gives her a Peridot, which can be used to summon him in battle.

Final Fantasy XI
Ramuh appears in Final Fantasy XI as one of the 6 prime avatars, available after the completion of the quest Trial by Lightning.

Revenant Wings
Ramuh is the rank 3 Thunder Aerial summon along with his pupil Raiden and his tool Ramii. His regular attack is Judgment Staff, while his special, Judgment Bolt, deals massive lightning damage to all enemies in range and causes Silence.

Final Fantasy Tactics
Ramuh performs a lightning attack when summoned.

Final Fantasy Tactics Advance
Ramuh performs a lightning attack when summoned.

Chocobo's Mysterious Dungeon
Ramuh appears in Chocobo's Mysterious Dungeon.

Chocobo's Mysterious Dungeon 2
Ramuh appears in Chocobo's Mysterious Dungeon 2.

Final Fantasy Fables: Chocobo Tales
Ramuh appears in Final Fantasy Fables: Chocobo Tales. He is a earth element card, and has six cards under his name.

Itadaki Street Special
Ramuh appears in Dragon Quest & Final Fantasy in Itadaki Street Special.

Itadaki Street Portable
Ramuh appears in Dragon Quest & Final Fantasy in Itadaki Street Portable.

Etymology
Ramuh is said to have been loosely based on an epic Hindu poem, written by Valmiki, called, Ramayana. The protagonist of the story is called Raama (also spelled Rama), who was said to have been the incarnation of the Hindu god, Vishnu. It could be suspected that the name Ramuh is an Amalgam of Raama and Vishnu, though this is not confirmed. In the Final Fantasy games, he is depicted as an old bearded sage with a staff and the ability to cast thunder magic. Rumors also say that he is based on the king Ra-mu of a supposedly sunken continent, Mu.