'Uncanny valley' is sometimes generalised to mean anything which looks almost, but not quite, the same as something you're familiar with, and is subtly disturbing as a result.
An example would be staying in a hotel for a while, then again in a different room that looks identical. (At least, that creeps me out, I start feeling like the room isn't really attached to the rest of the world.)
Sorry, think I'm missing something here... How does the Twizy look like a human?