>>53609393Sky uses the walking animation in place of any missing animations, since Chunsoft never expected you to use any Pokemon in any situation. This is why when you evolve your starters, they walk in place instead of sleep, because they never got an EventSleep entry
even though it's as easy as copying over the sleep sprites from the dungeon, so I was able to fix those.
Generally it's not too bad, it only ever comes into play with story scenes. The worst by far is this scene, where they walk in place the entire time instead of being just a head. I'd love to fix it but there's not a thing I can do about it short of making the missing sprites myself or hoping someone makes them.