Best I can find that fits what you wanted, no tats. Since this one has no legs (I couldn't find any better, so sorry. ) Just give him regular black dress pants, a la Ryuji Yamamazki, and leather boots a la Demitri Maximoff. Should fit the cut.
As for the keffiyeh, I think it's fine as is, over-complicating will make it look bad. As far as I know, it looks fine, and I think Capcom would have done it the way you did.
How come I tell you this? It's simple.
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But seriously, the keffiyeh is fine, you did a good job on it. No need to take it further, honestly, unless you want to, then in that case, IDK what to tell you to do with it.