The mystery of the Triangle Attack animations

In all three of the GBA Fire Emblem games there’s 2 distinct Triangle Attacks. One for Pegasus Knights, and other for Armor Knights (And also, their respective main promotions). And one day, I thought it would be a fun project to edit these animations to see what would come out of it.

However, these animations are not found within the battle animations menu. In fact… they don’t seem to be found anywhere.

And after searching through this site AND the Discord server, it seems tha there’s absolutely no documentation whatsoever about these animations. Which seems to indicate that they might be hard-coded into the game.

So, I invite anyone who might have any info about these animations to share it in the replies. Because I belive this could be useful to future hacks, in one way or another.

Thanks in advance.