Removing a playable character from the game

Is there a way to remove one of the 15 Playable Characters from the game, for instance in FFVI the Eternal Crystals Cyan is a Dark Knight but changes into a Paladin during the Cyan's Dream sequence and the Dark Knight sprite is removed. Also, not to speak of the death like this but, I'd like to make an event so a character dies sometime in the game as an event or something, similar to where Kefka kills Leo in Thamasa but in some other fashion, like to a monster or something.

You can assign a spritesheet, palette and character stats to one of the 15 chars. This is already done in the game, where as an example Strago and Relm are the two ghosts on the train which were prior to that moogles during the first multi party battle.

Here's for reference Terra's assignations at the beginning of the game:

Code:

CA/5E34: 7F    Change character $00's name to $1D (????? )
CA/5E37: 40    Assign properties $00 to character $00 (Actor in stot 0)
CA/5E3A: 3D    Create object $00
CA/5E3C: 3F    Assign character $00 (Actor in stot 0) to party 1
CA/5E3F: 37    Assign graphics $00 to object $00 (Actor in stot 0)
CA/5E42: 43    Assign palette $02 to character $00 (Actor in stot 0)