Smooth walking animation. To be honest I like the first version the most. I like the more exagerrated movement and the clean design of it. Also, there are some really unnecessary colors on the shaded ones. Actually the different tones doesn't really help to define the shapes on them. I suggest you trying out a bit less but more contrasty shades.
I liked this guy so much that I whipped up a small edit of one of the frames. I hope you don't mind.