While Atlas and P-Body are both properly ambulatory, Wheatley has always owned the skies. We are thankful for Wheatley, considering he helps us through the single player campaign in Portal 2, but he's got no legs to speak of.
Thanks to custom toy builder KodyKoala that has changed. This new custom body looks equal parts Sentinel and War Machine. The figure even comes with a custom Companion Cube. Check out Kodykoala's Wheatley Body. It's amazing to think that this guy came from a Wheatley key chain.