General Leo is technically playable.

[Sephex]

How To Break Final Fantasy VI (http://kotaku.com/5924518/how-to-break-final-fantasy-vi)

Very interesting stuff. I will let the article speak for itself.

[qwertysaur]

Who knew Banon exploded while at the opera? :p

[Spooniest]

I went to the trouble to do this myself. Crazy stuff!

[ReloadPsi]

Maybe, but I find Gauaaa a far more useful character.

[Jessweeee♪]

Check out this LP: Final Fantasy VI (http://lparchive.org/Breaking-Final-Fantasy-VI/)

General Leo, and so much more! I think Psy linked to it in a thread not too long ago.

[King Edgar]

Check out this LP: Final Fantasy VI (http://lparchive.org/Breaking-Final-Fantasy-VI/)

General Leo, and so much more! I think Psy linked to it in a thread not too long ago.

Yeah, that's exactly what the Kotaku link refers to. It's even linked in the article...

[Jessweeee♪]

Oh, I skimmed. Hahaha

[ReloadPsi]

Incidentally there's code in the game for Kefka as a playable character as well. All he can do is automatically attack with the morning star he has equipped though; it's for when you chase him around the imperial camp near Doma.

It does also mean you can ROM hack it so he has two Ragnaroks and an Offering and can royally ruin your day if you're not quick on the draw ;)

[Mirage]

It's not as much the game having a code for kefka, as it is the cheat tool hacking the game to load character data from somewhere it's not meant to.

[*Laurelindo*]

It's a pity that the temporary characters have some of the best skills.
You could kick some serious ass with Leo and Banon, because Shock and Health would pretty much be the only moves you would ever need.