At one point the group takes a baby along, wanting to get it back to his mother since she's living along the way.
The baby is also an evil genius serving Dio that tries to kill them with its stand that can enter dreams Freddy Krüger-style.
Kakyoin is the only one who realizes the baby is evil and defeats its stand. After that, the baby gets a very nasty punishment. Kakyoin takes its poop and drops it into its food before Polnareff wants to feed it.