Thanks @Drax and @Meat, I did this small update for the 8 directions before I got the chance to read your comments:
Do you guys think I should make him somehow translucent so that the eyes and mouth can be seen partially from the back of the slime? I dont know if I can pull that off.
@Drax, I will surely increase the number of frames, but I am not sure if I should put some easing or tweening on a simple bounce motion like this, and if I should, which frames should be added where :/
@Meat, this is a super cool idea, now I must definitely play with slimes taking shapes, the game will have some cross sections of pipes (like mario3dworld) and this would be a perfect twist, maybe even a slime-in-a-lab-tube as the armored version of the minion. I really need to learn how to draw glass
. As for the invisible wall effect you are absolutely right, and I have to figure out a way to fix it without exceeding width of 24px.