The Simurgh (シムルグ or シームルグ, Shimurugu?), also known as the Roc or Amprex, is a recurring creature in the Final Fantasy series, first appearing in Final Fantasy III.
Appearances
Final Fantasy III
The Simurgh appears as an enemy encountered in the skies around Doga's Manor and the Crystal Tower, attacking with regular physical attacks and often fighting in pairs. It is of no threat to the party.
Crisis Core -Final Fantasy VII-
The Simurgh appears an enemy encountered during Wasteland Investigation, An Unknown Island, and A New Path Discovered. It is a dangerous foe without good dodging skills or Lightning-elemental protection, as it attacks primarily with Tri-Thundaga and One Million Volts in addition to rapid divebomb attacks.
Final Fantasy X
The Simurgh appears as an enemy encountered on the Djose Highroad in areas of sunlight. It attacks with a basic regular attack and is generally of no threat to the player.
Final Fantasy XI
The Simurgh appears as a roc notorious monster encountered in Rolanberry Fields and Nyzul Isle. In the former it can notably drop the Trotter Boots and the Arcana Breaker, and grants the title "Simurgh Poacher" when defeated.
Final Fantasy XIV
The Simurgh appears as a boss encountered during the FATE 
Simurgh Is the Word in Upper La Noscea.
Final Fantasy XVI
The Simurgh appears as a mini-boss encountered during the sidequest Where There's a Will. Its encounter area is relatively small for its high mobility, and can cause the encounter to easily reset if it moves to far away.
Final Fantasy Mystic Quest
The Roc appears as an enemy encountered in the Bone Dungeon, using its Beak and Blinder skills to fight. It is otherwise of no threat to the party.
Final Fantasy Legend III
The Amprex appears an enemy and a potential transformation.
Pictlogica Final Fantasy
This section about an enemy in Pictlogica Final Fantasy is empty or needs to be expanded. You can help the Final Fantasy Wiki by expanding it.Final Fantasy Record Keeper
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The Simurghs from Final Fantasy X and Romancing SaGa 2 appear as enemies.
Final Fantasy Brave Exvius
The Simurgh appears as a boss encountered in the the Clouds of Lasting Light.
Mobius Final Fantasy
The Simurgh from Final Fantasy X appears as wind-elemental Warrior ability card. It grants the Hyper Vacuum ability.
Etymology
Simurgh (lit. "thirty birds") is the modern Persian name for a gigantic benevolent mythical flying creature. In the Sassanid Empire era, it is depicted as a peacock with a head of a dog (sometimes with a face of a human) and the claws of a lion. The figure can be found in all periods of Greater Persian art and literature and was used as the royal symbol of the Sassanid Empire. In modern depictions, however, such as that of the Iranian 500 rials coin or the flag of Tat people, it is entirely birdlike.