I'm not sure if I will be able to update this as often as I'd like, but I found this to be amusing..
Attacks using Fatal are few and few in between...
Attack Sequence Data that uses this..
0x0A - pick any random target or character (?!) and use Fatal (sounds like an early version of Roulette)
0x0E - pick any random enemy and use Fatal (used for the Floateye+Red Eye monsters)
0x1E - just cast Fatal (on any character, used for the Tinymage's Charm script)
0x6C - used in a spell sequence that follows Fire2, Psych, and Drain (not used in anything at all I believe)
0x0E and 0x1E is used, but the rest doesn't seem to be used at all... actively anyways..
Grouped Attack Sequence Data matching up with (excludes all known used scripts)
0x0A -> 0x3E, that would be interesting to use... a random death attack.. (although, it's seems to be the "do nothing" for the Lunar Subterrane battles)
0x0E -> 0x79, I don't think that's used for anything... and it's written wrong as far as I can tell (on second checking, this is used for the Blue Dragon, another Lunar Subterrane monster)
Also, it seems that Leviathan's attack sequence has something that never gets executed.. hmm