Looking at the ogre art/models above I am reminded of a custom ogre that is Madfox's excellent Fourfeather:
The new ogre in this map does seem to resemble these models, I wonder is it an original or are these models available somewhere - Madfox? I'm going to guess he made it because of all the other custom stuff in the map (Bender!)
@killpixel - looks awesome. For some reason the art style in those videos reminds me of the Rayman universe.