What program did you use for the third one? It kinda looks like it's a flash thing from newgrounds madness in that depiction
I used Paint Tool SAI for the third one.
The first one was the first concept for it. I took out the gear waist, knee parts, stopwatch head topper, and made the arms and legs one solid vine instead of a tangle of multiple vines. The second image was in MSPA aliased style.