Robin's sad because the other Titans know so much about their own families while he's an orphan with no knowledge about his ancestors. He lets Cyborg give him a DNA test, and learns that he's descended from Babylonians...with an emphasis on the Baby.
- Chekhov's Gag: Throughout the series, Robin had been mocked for having "baby hands" under his gloves. In this episode, they're proof of his Baby-lonian ancestry.
- Forced Transformation: The Babylonians turn out to be evil, wanting to transform everyone in the world but themselves into babies so they'll no longer be ostracized as freaks.
- Fountain of Youth: The Babylonians successfully transform everyone but themselves and Robin, including sentient machines, into babies.
- Little People: Everyone from Babylon has at least one part of them that's still baby-like, such as a tiny face, tiny legs, or a tiny torso.
- Miniature Senior Citizens: King Baby Mouth's advisor is an old man with grey hair that is the size of a baby, but claims that the only part of him that's always been baby-sized is his ears.
- Ontological Inertia: Robin and the de-aged Titans successfully stop the Babylonians and blow up the giant rattle they were using to transform people...but the Titans don't immediately age back up, forcing Robin to take care of them back at the Tower.
- The Unintelligible: The King of Babylon is named "Baby Mouth" because of his tiny mouth, which prevents him from articulating and requires him to carry around a baby-sized advisor that speaks for him.
