Actually I know of someone who is an excellent artist and animator, who did several skins/models for Unreal Tournament for the PC; one of them was Roller Girl; he also did an excellent Marine model for UT, as well as a little squirrel model that was damn cute, complete with voicepack. The last I heard from him was almost a year ago, and YES, he was workin' on a "fun bag" model for UT. I believe he then got sidetracked, possibly went to work for a gaming company, and that's the last I've heard from him. (He was considering doing a model for UT based loosely on Linsey Dawn McKenzie, I had sent him some samples of LDM for "research").
I also know of someone who did custom models for the old Mac game Marathon,(John Coffey)including an Amazon pack, which included some very creative costuming. He had these "Roberta" models, tall brunettes with big bare bosums wearing some kind of black leather outfits; and also the Amazons, which were black haired beauties (for the graphics available at that time) who were topless and bottomless. When they were on the attack, the Amazons would squeeze their tits together, and a ball of energy would shoot out! He made custom voicepacks for those models also. I have some old screenshots somewhere if you're interested in seein' them. They would be lower quality because of being an older game. There was also mermaid type characters John made for the game that floated through the air, were also bare breasted and nicely proportioned. John used to host a Carmageddon web site for Macs also (Carmacgeddon), and he made custom "babe" packs for the pedestrians for that game also. RealLife also took its toll on him, haven't heard from him in a long time either, he was designing websites for a large corporation the last I heard from him. If you're reading this John, hope you're doin' well; for all I know he visits here incognito.
I never went that much for third person shooters such as Heavy Metal, even though that game got good reviews; same for Tomb Raider, even though I played it; I always ended up going back to first person shooters, easier control and better action. (and no, haven't played Halo yet, but will get around to it someday).