Gym Leader Dietrich

Katelyn is the 4th Gym Leader of the Suinami Region, and specializes in the Dark type.

Appearances
You first encounter Katelyn in Seaport Town. She passes by you on your way through, with a group of people walking around her. Later, in Juniper Wave City, you find her training in a secluded spot right outside the city. She says that you disrupted her training time and she runs to the gym.

Once you reach the gym, it's a straight shot to Katelyn, who just stands at the end of a very long hallway. After you defeat her, she will give you TM Dark Pulse.