It's Claptrap, from Borderlands 2. I'm sure he's been ported before, but I didn't have any version of him installed. Decided to port him myself, since he's not terribly complex. Built him a custom IK script as well. SFMLab is refusing to let me upload the file right now, so here is an off-site mirror:

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  Claptrap.rar  4322016-01-31 20:32:274.44 MB
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Thumbnail image for Claptrap
Importing SFM Maps into Blender
REDxEYE recently updated his SourceIO plugin. The latest version allows you to import SFM maps.