Thank you Edward. For being the only person so far outside of a PokeMart employee who told him to leave one time, to put Wrath back in Evil Child Mode.
In this case it's definitely a matter of him reacting directly to Ed being fed up and Already Mad, if it weren't for that Wrath would... still be moping. But he can't help it, this is pure "lion sees toddler on the other side of a glass wall and just goes for it"