Yep, that is lego you see ( I have lots hanging around ). I mostly just use any odds and ends that I can find laying around my house. These are all based off of the basic Mcfarlanes Spartan figure.
You probably could. See, i have been trying to sell them localy (as I am not yet on e-bay and won't be for a while) but to no avail. So technically, if you wanted...
Thanks! They are probably the ones I put the most work intoother than Power Suit Samus (That one was for my girlfriend's B'day ^^ It had to be special)