What battle system are you using?
With the default battle system, you sadly can't do animated battlers.
Tankentai SBS allows for 11 4-frame poses, charsets, or Kaduki poses.
Melody lets you have charsets, Kaduki, or -actual- animations as battlers.
If you're not using either of the battle systems listed above, you should look into both and see which you like better.
Hope this helped!!