A large, humanoid robot.

In walked a large machine. It was at least three times her size, looming over her as though it were an adult and she was an actual baby (which was probably intentional).

It was humanoid in design, standing on two legs, with two arms with four fingers and a thumb on each hand. Its body made of what looked like a mix of white plastic and a touch-screen, its face a black screen that displayed personalized pictures

It looked like an anime robot man would look like if designed by Apple.

"Hello, baby girl. How are you this fine morning?"

Ellen didn't say anything. It wasn't like she could answer back, what with the pacifier in her mouth. She didn't even acknowledge it, knowing that it didn't actually care about her opinion. It was just a machine filling out a subroutine.

"That's wonderful. Uh oh. It looks like someone had an accident. It's okay, baby girl. Babies are supposed to have accidents."

It reached down -- the screen on its face giving a generic smiley face, clearly having only a superficial understanding of human behavior -- and reached under her arms, picking her up. It laid her down on a nearby pedestal, the roof of the pedestal made of the same soft-cushion material as her diaper, as she felt the mess in her pants squish under her weight.

The diaper was designed in such a manner that it could not be removed by just anyone. Instead of being held down with sticky tapes, it was instead held together with small, bolt-like magnets, the only tool that can unlatch these magnets being a screw-like device built into the robot's pointer-finger.

After it removed the magnets, it opened the diaper up. She curled her nose as the smell of her own mess, having originally been vacuum sealed by the design of her diaper, exploded into the room. The robot, lacking a nose, did not notice as it dropped the soiled diaper into a tube that rose up next to it out of the floor,

While a human parent would clean the poopy bottom of a baby with baby-wipes, the robot unfolded its palm from its wrist and, from the nozzle hidden beneath it, sprayed a light-blue foam into her diaper area. The foam fizzed and bubbled, Ellen laughing beneath her pacifier as the popping bubbles tickled her skin as the sudsy foam expanded over her.

After waiting a minute, the wrist that expelled the foam vacuumed the foam back into its arm. The foam had completely dissolved the human waste that had stuck to her skin, leaving behind only suds that still clung stubbornly to her skin.

From a compartment in the pedestal, the robot pulled out a folded, unsoiled replica of her diaper. It placed it under her bottom, spraying her with a clear, oily substance from one of its fingers to prevent rashes, before applying the new diaper over her, making sure to bolt it shut to keep it from coming off.