Battling the Security Corps' Secret Weapon

Unlock Criteria: Version 1.1, after defeating Dialga/Palkia

Description: Zisu has suggested that you have a battle with a little-known, skilled battler in the Security Corps.

When you speak to Zisu, she will mention that she has figured out a new opponent for you to defeat. This opponent is Ress, the guard keeper of the town. She will insist you challenge him in a battle. If you defeat him, he will appear at Ingo's battles