"You just don't like them because he got your sock wet."

Armin'll have you know that Perses and Pallas are absolutely delightful.

He also turns to Marco. "They are not really a two-headed pokemon. Those exist, of course, but Binacle are actually made up of two individual pokemon who always live in a pair and share a rock. The only time you'll see a Binacle on its own is if they have fought badly with their other half and separated. They can't really survive that, though, so if they separate, they hurry to find a new rock and partner." Lesson over. "And Jean doesn't like mine because one of them drenched his sock when Jean was picking a fight with the other one."