Keep in mind this is for non-Game Genie, non-Gameshark use.
My favorite is Locke- The ultimate character; since he’s automatically placed in your party during two key events after you acquire the Espers, he becomes an obvious choice to build up. With extremely high Vigor, and the highest Speed stat in the game, Locke has great potential. If built up properly and equipped with the right weapons, he’s unbeatable.
Right Hand- Illumina
Left Hand- Paladin Shield
Helmet- Genji Helmet
Armor- Genji Armor
Relic 1- Thief Glove
Relic 2- Offering
In this form, Locke never gets hit; literally, never. I can’t remember the last time he was hit by an attack. If I equip the Atma Sword in his Left Hand, he can do between 60,000-70,000 damage. I have hit an incredible 100,000 this way, but that was one time, where my sword cast pearl each time I hit with it. Never happened again. Regardless, with this character, I can beat any boss in the game one on one. (In theory, if you stole the Ragnarok from the tower final boss, you could equip it and lay waste to Kefka with 16 shots of 9,999; if you cast speed on yourself, it would be possible, though about a 1 and a billion chance, that you could hit 32 shots of 9,999…which would be an assload of overkill.)
The difference between using Locke this way, or using another character who can equip those weapons this way is that Locke has a speed stat of 40, which is about 10 points higher than Edgar, Terra, or Celes. Locke always hits before his opponent. That means certain death for even Kefka, The Goddess statues, Chupon, Siegfried, or whoever I want to inflict instant death on.
What about you? who’s your ultimate weapon in FF6?