I just received vols 1 & 2 of the manga today. Volume 1 starts out nearly identically to the episode above, & is very enjoyable. However, I suspect I would like it even more if I were grounded in Japanese pop-culture.
Anyway, Arale is the robot 'girl' around whom the story centers. In the manga, she was fitted with a body-stocking-type skin just as was Atom in the 80s anime, I do not know which was first, though. Unlike Atom, she takes her energy from a baby bottle, and is taken for a human. Much of the humor relies upon her not knowing her own strength and her naivate (spelling?). I think that 5 or 6 volumes are currently available in the USA, with another 1 scheduled for release in June.
Oh, & like young Atlas, Arale also has nipples.

But no nostrils. The name 'Arale' is strange for a Japanese word, since the Japanese make no distinction between the 'R' & 'L' sounds.