Gilgamesh (Final Fantasy V)

Gilgamesh is one of the villains of Final Fantasy V, and a recurring boss in the series.

Story
Gilgamesh was the right-hand of Exdeath. He was first left with the task of keeping watch over Bartz, Leena and Faris, who had been captured by Exdeath. Galuf invades Exdeath's castle and confronts Gilgamesh, who decide to flee. As the four leave the castle and cross the great bridge connecting the castle with the western continent, Gilgamesh challenges them to battle. After some punishment, Gilgamesh pretend to surrender, only to cast Haste, Protect and Shell at himself and go more offensive. Even so he is defeated, fleeing again. He confronts them again in Zeza's fleet, as he sends many monsters to fight Zeza and Bartz. After the monsters are killed, Bartz faces Gilgamesh again. During the fight, Enkidu arrives to help Gilgamesh, who is pissed for him being so late. The duo fight together, but they are once again defeated.

After the death of Galuf in the Great Forest of Moore, Bartz and the others go back to Exdeath's Castle. They find an empty treasure chest, which Gilgamesh had already opened. Gilgamesh claims that he now possesses the legendary sword Excalibur, attacking them. During the fight, he notices Galuf is not along with them, becoming saddened after learning that he died. Gilgamesh then shows his true form, deciding to attack with the Excalibur. The sword, however, was just a replica, and Gilgamesh is unable to fight. Exdeath gets infuriated with Gilgamesh's incompetence, and banishes him to the Interdimensional Rift.

Bartz finds Gilgamesh inside the Rift, where he is apparently maddened after fighting many monsters. Gilgamesh doesn't recognize Bartz at first and attacks him, but he eventually recover his sanity and asks Bartz how he entered that place, leaving shortly after. Later on, when they confront Necrophobe, Gilgamesh appears again and teams up with Bartz. Wishing to fight Bartz again, he uses all of his strength to kill Necrophobe, apparently dying after this.

Other appearances
Gilgamesh didn't died, instead he gained the ability to travel through dimensions. Everytime he appears, he is looking for the true Excalibur and for strong opponents to fight, usually accompanied with Enkidu. He collects swords from all dimensions he visits, but he had little success in finding the Excalibur.

Trivia
Gilgamesh is the only character from Final Fantasy who is always the same character in all versions he appear.