I always like learning how an engine is made from the ground up -- especially one as prestigious and highly used as the Unreal Engine. Here in the above video you can do just that with Epic's Jordan Walker and Zak Parrish, as they take an in-depth look at Unreal Engine 4, focusing on character aesthetics.
They pretty much go through the basic process of how a character is made from the art to the actual digital model, using the "Infiltrator" as an example. It's easily worth a watch if you're interested in game design.
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