This marks the first anime mention of Aura, the special kind of energy introduced in the movie Lucario and the Mystery of Mew.
Ash: Listen, is that bad guy talk I hear?
Dawn: It speaks to me, loud and clear!
Ash: On the wind!
Dawn: Past the stars!
Brock: In your ear!
Jessie: It's that kind of imitation they invented lawsuits for!
This episode was originally scheduled to air on May 3, 2008, but was delayed by one week for unknown reasons.
Beginning with this episode, 4Kids voice actors returned to the show voicing guest characters.
Pokémon Debut: Spirtomb
Title Pun: The Keystone Cops