1.
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That white thing on his forehead is slightly annoying.
Also there's some colour disturbance on his cheek..
Other than that, i like the atmosphere >_O
2.
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Did you do anything here except making the stock B&W and put some gradients on?
Hm.. Anyway it's cool i guess.
3.
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Hm.. Might be the best one of these.
Don't really like the bg though, especially top right corner. Should be blue or something there.
Perfect avy to make the eyes to stand out, i'd really done that on this one >_O
4.
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Question: Did you make the text/symbol yourself? In that case, awesome!
If not then.. :/
5.
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Slightly dull, and i don't like the blue tinted fade on the left. Should be an entirely B&W stock. It's a lil' confusing xD.