Pretty good toon-Arnie there, HM.
It looks nice, if a bit stiff with the movements.
What was this testing, character design or animation?
Here's some ideas from a newb, so take it for what it's worth.
-During the walk, you could add a bounce so it looks more natural. It's the Terminator as well, so make him move more slower/menacing.
-Doesn't he use a shotgun in the films? Much more explosive than a laser gun, although yours is looking pretty good.
-The mouth is great, especially his over-expressive tongue ^_^
-His hands look a bit odd. Maybe closing his left one with a fist, might make it look less like a giant foam hand?
Has this anything to do with the Darth toon? Are we in store for some great cross-over films?
Keep it up.