I do love the Citadel C28 line of giants. There are 9 different bodies, 10 heads, and 8 weapons according to the CCM wiki, so it offers the discerning collector a chance to mix and match to their heart's content. As soon as I had this particular C28 giant in my hands, I knew exactly what it was going to be: I give you Darth Maul, fire giant.
I mean, come on, how could I NOT paint this guy up as a fire giant with red head spikes? I briefly toyed with the notion of giving him some red face paint, but quickly decided against it. It's OK to use Darth Maul as a creative inspiration, but I didn't need to go all the way.
Darth didn't come with a weapon, so I made him a placeholder axe out of various bits. The haft is way too long, so the proportions are out of whack. But it will do for now until I am able to replace it with something more suitable (I think the C28 sword or mace would do just fine).
You can see some nicely painted C28 giants on Orclord's SOL page (along with a veritable treasure trove of giants and many, many other creatures).