The T.R.O.L.L. was supposed to be a Stryker with legs, basically. DRB was very impressed with the Stryker system in general while in Iraq, and asked me to make something that fit that general concept- an APC that is an AFV first, and an APC second... and this was my take.
I'm glad people think it's ugly. It's really deliberate, just like a lot of GMN's stuff for Resistance came out ugly (in a good way).
Resistance's stuff is sometimes based on Ancient military designs, but a fair amount of it's industrial / recreational stuff that they re-purposed (in my private version of the backstory, anyhow). The Ancients, other than maintaining a fantastically-powerful fleet of spacecraft designed to deal with hostile contact with aliens (most of which was destroyed or subverted by the Overmind), didn't have a lot of ground-combat stuff (they'd never met aliens with Planetary Shields).
They had some old tech (like the HeavyMech and MBT) that they'd kept in their files, because it was the most dangerous equipment at the time of the Unification (historically, the Golden Age began after a rather nasty war which finally united everybody under a single government), but nobody was really designing anything new, because what they had worked well enough for the few times they needed armed force during the Golden Age.
Luckily for the Resistance, the ARKs were repositories of human knowledge, including designs of older military hardware... and that kind of thing was there, just waiting to be used again.
My feeling is that a version of the T.R.O.L.L. was once used by settlers on new planets, where there weren't any roads yet. I don't think it was originally meant to be specifically military, just "paramilitary", and easily-converted.
References (like, what was I
thinking?), if you're interested:
1. Great apes (the design of the feet, they're deliberately designed to reference knuckle-dragging).
2. An indirect reference to the Syd Mead walker design that was probably the single-largest inspiration for the AT-AT:

I mainly just drew on the scale-feel of it, I didn't want to reference it any more closely, because having animated a walker with roughly similar joints... the leg design sucks. There's a reason Nature doesn't do that, the poor guys riding that thing would be unable to drive it at any real speed.
I've thought about writing him a couple of times, to ask him what kind of motion studies he might have done, since that might help me understand that painting (I'm guessing that when he was throwing the book together for U.S. Steel, he didn't have any time, a lot of the work was stuff he'd done already for various clients) but like with Kow Yokoyama, I dunno whether I want to bother him over something that trivial.
3.
The Gage Commando... and the
Soviet-era BTR AFV.
4. The Fido. Duh.
So... yeah, it was supposed to be ugly. Only thing is, if I could do it all over again (which I won't be, until the next release at least)... I'd give it a bigger skin, and stick more greebles on it. I ran into huge problems trying to deal with something that large in scale at a 512 size, vs. everything else, but I finally managed to not annoy myself too much. I'd like to do it over, but not until I really don't have more important things to do.
Hmm. We need destroyed building wreckages...
You wanna make some?
I was going to get to it, for big stuff, with several versions for the skyscrapers, using a lot of clone stuff and other tricks to get it done fast and keep polycount down and re-use uvmap space as much as possible. If you want to take a whack at it, great, if not I'll get to when I'm done with the more-immediate stuff that's on my plate.