The Best RPG Final Battle Is

[the_bloodwalker]

- Zophar, from Lunar: eternal Blue.
- Valmar, From Grandia 2.
- Ramirez: Skies of Arcadia.
- Lavos: Chrono Trigger.
- Fusion of the 4 Sinistrals: Lufia and the Fortress of Doom

EDIT:

How can I forget Dark Gaia from Terranigma?