Don't fool yourself, sweetheart. The only emergency you were designed for is an explosively horny captain.

To answer this, simply say "Why not?!" As a Robot having forms that allow better interaction between human and mechanoid such as a fox, Emotive Grasshopper (I am referencing Short Circuit 's Johnny 5, his little tracking logo the radars showed in the first movie always made me think Grasshopper for some reason, also a Grasshopper is how he became aware of being alive) humanoid or anything other than a tube that talks when you call it's name there should be no limit to form.

Sheesh it is dumb questions like this that made me not enjoy Transformers Animated as much as the others, great show don't get the wrong idea. But bits not having the choice of their name, their form factor determines their typical duty, and thinking more mechanically is not how sentient beings act even if they get have microchips instead of Neurons and nerves for their brains.

Also Sentinel can slay himself, Optimus should be Magnus and Sentinel forever Minor, for someone Spark sake!