Koybi

[Zadaben]

EDIT: Upon further examination, I have found my initial impression to be incorrect, all that needs to be fixed for the animation in my opinion is his foremost arm, which has too much snapback (more of snapforwards I suppose), try reducing its forwards movement by one pixel.
It might also be a good idea to note that Kirby's arms do not perfectly mimic pendulums, there is some visible representation of attachment to the body as well.