Titan Extreme

You're talking with the one who created the Ultimate Czar Dragon battle, after all No need to know how works stuff, inside a battle at least.

Well, I guess I should be thankful you made it 23 hours and 8 posts before you brought it up.

No, it happens ONLY with Mountain Buster... the special, right?
It does't show his animation, it's weak and breaks the battle with that glitch... why? i'd like more another landslide(single target), rather than that attack...

Tumult is his special that's animation-less. Did it happen then or during Mountain Buster?

I say this because it was almost dead, i smashed him, until the battle moved inside the caves... and when i almost got him... Mountain Buster.
Glitch and the battle went wild Actually i managed to handle the bug right in that moment, but it was too late since he stole me Cyan with inter, due to the glitch and a temporary jamming of my strategy.

Sorry 'bout that.

One last thing: which are the musics that played in the sky and in the
caves?(name, game to which they belong)

Cave's has 2, so if you only heard one then you haven't made it to phase 5 yet (no worries tho, its actually not much harder than 4). I discovered you can deal enough damage to keep him from even cycling his whole skill rotation once. It would take either a longer fight (pointless in my mind), or adding more moves per turn to the rotation to make it significantly harder. Like I said in the OP, it was designed with the Titan Extreme Primal fight from FFXIV, which is a real-time MMO with 8 independent players moving in full 360 avoiding attacks. I had to get really creative just to get here.

Sky:
FFIV: Run!, imported by Royaken

Caves:
Phase 4
FFIX: Assault of the Silver Dragons, imported by Royaken
Phase 5
FFT: Unavoidable Battle, imported (special for this boss) by Gi Nattak.


Edit: I had a potential Epiphany moment on the glitch. I might be having a divided by zero problem (damn paradoxical math) in the partial defense ignore code... Do me a favor and when the glitch happens note who the target of the particular attack was and tell me their defense rating. If it hits multiple targets at once (like mountain buster), tell me all the characters, if its a multi-hit attack (like tumult) give me the person hit before and after the glitch appears. So say it looks like it appears on attack 4, give me target 3 and target 4. Make sure you designate which is which in your post. I will be doing some testing without that code running to see if the glitch still appears.