Found 'em all here. Search for Gundam.
I know there’s a lot of people wanting Gundams in GMOD, so hopefully someone can muster up the courage to convert and rig these all! [and maybe make them life-sized ingame. Maybe make one set life-sized, another human sized?]
My requests from this site are anything from Gundam Wing, Gundam Unicorn, and thaat’s about it.