The first pic is the Hulkbuster robot turnaround that I did. I'm pretty sure this was based off of a Bryan Hitch design but I might be wrong. I'm also not sure if it was for Hulk orIncredible Hulk: Ultimate Destruction video game as I worked on both. My memory sucks.
The second pic was a pitch piece and it was originally the Hulk doing the punching. I can't find that version in my archive. This is the reworked version I did later. To be honest I don't think any of my art made it to the released games.... sigh.