I discovered this angry robot drawing amongst my archives. It's on ACME-punched paper, so I sort of recall drawing a bunch of these for animation. The robot is definitely my own design, I remember going through a couple of dozen tries before it looked right. Note the diesel engine backpack it uses for its power source. There's gaps in the artwork since that's where the animation likely was supposed to go. I recall that the hole rendered in the robot's side was because it had been shot in some automated war, and now that it was missing some of its critical internal components it had gone mad with rage.
I think I may have drawn this somewhere around the year 2000 or so. It's not new artwork, although if I need another angry robot I might use this one again.