The interactive wall-e is quite a bit smaller. My first Wall-E robot in 2008 was the interactive shell. It was a tight fit getting the EZ-B in. I also had to use a custom battery pack, because the 5 cell AA wouldn't fit.

The servos were not regular sized servos for the arms. The neck servo was regular sized.

I did not have a camera in the head of that wall-e. You could probably fit it in. It is very much smaller, but it might work. I sure the heck would try it, but i'm kind of nuts that way ... So go for it! :D

Dj's Interactive Wall-E