I really like this guy's aliens, his skin colors look so very realistic and the shapes while odd, seem plausible.
Sculpt by bakaneko
Alien Portrait by Mavrosh.deviantart.com on @deviantART
Trevor Claxton art - ROBOTAKO
40 Mindblowing Sci-Fi 3D Renderings: The Universe In CGI - Blog - CGTrader.com
Max Steel makes me happier than I need him to..
Scout bot 1 by ~Trufanov on deviantART via PinCG.com
i love the mixture of clean, smooth robotic surfaces and the over all dirtiness of a skittering insect. definiately a C'tan like creation.
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