Right Arrow/Down Arrow/Spacebar = Next costume Left Arrow/Up Arrow = Previous costume
I didn't create some of those assets (some of them are from JJPMRises' "BFDI Assets in Vector"), but I did create some other assets (like Bomby's, Book's, or Coiny's). Anyways, Credits to jacknjellify for creating BFB. Those assets are free to use for your BFB projects or animations.