Modifying existing animations?

I made the animation, but it's still very rough, and I haven't been able to get it into the game for some reason. I'll need to spend a lot of hours working on it, because before this, I only made simple 2D animations.

While digging through the animations, I found out that Archdevils actually have an animation for movement without teleportation. I don't remember ever seeing it. The Death Knight has a special ability (or rather, an animation for it) that looks very similar to the animation for the Paladin's special ability. These knights are also missing the "happy" and "stir" animations. The liches don't have a "happy" sound, although I'm not sure what sound would be appropriate for them.

There's a lot of interesting stuff, actually.