He's real

[kresty]

There would be several different models for different scenes. Each round panel has a different design, the designs are actually outlines to opening compartments. The droid is said to carry a light saber, tools and some personal items- a self-propelled valet of sorts.

The round dots that are all over the outside is where a self-defense protruding spike system comes out, similar to a puffer fish. I think this little guy (most sites call it a 'she') is going to be the comic relief and the conduit for connecting the other characters, like R2 and C3PO were in the earlier films.

I figured the ports did stuff too.  Are you going to make it do stuff?