I don't think there's a problem with the helmet. It's how I immediately identified him from the thumbnail after all, so you must be doing something right. The stripes are what's important. Maybe it WAS bright in colors but then it faded with time. Good job with the face too. You can really see how he might be a relative of BJ Blazkowitz (the guy from Wolfenstein 3D). Did you know that? They named him Billy Blaze because it was supposed to be a hint that it was an americanization of Blazkowitz and he was supposed to be the grandson of the wolfenstein guy or 3rd cousin twice removed or somethingorother. And then maybe he grew up to become the doom guy. Nah, why would he join the space marines if he's got an IQ of 314. Maybe Duke Nukum. Duke Nukum's just a guy, not a marine, right? It's time to kick ass and chew gum, and Commander Keen's all outa bubblegum. SHAZAM! Or maybe the half-life guy, since he's a scientist, right? Nah, he looks completely different. Now I want to go and watch the strifetoons series again. Yessir, when I build a spaceship and leave this hellhole of a planet, I'm definitely going to name it the beans and bacon megarocket, regardless of whether or not it's made of cans of beans. Which I guess it won't be. That's almost as ridiculous as the scientist guy on Gilligan's Island making a working television out of reeds and coconuts. But not a raft. Oh, a working raft, that's just beyond him, he's not THAT much of a genius.
Anyway, good to see Keen. 20 years back, could it be that long. Longer, even. Damn. I've got to go kill myself, too much time has passed, man was not meant to live this long. Back in the days when the internet was an unheard of term and commercial video games were.... actually pretty much just like the indy games on newgrounds of the last 10 years. Long later I learned that there was a parts 4-6, not just the parts 1-3 (which I paid for). I learned that when I read the secret out-of-bounds text of an animutation called "French Erotic Film". Damn, I got gyped, I guess I ordered it too early. AHh, memories. Great art in any case. Couldn't do better with it.
Say, what's the cylon looking robot soldier sort of thing on the left? I remember the 2 eyed green martian, and the annoying little sentry robot, but what's the soldier?