Buck is first seen in the Fight Area, where he overhears Barry talking to the player in Diamond and Pearl and Brilliant Diamond and Shining Pearl and watches the player battle with Barry against Volkner and Flint in Platinum.

Buck is one of the five Trainers who can join with the player during an event in the Sinnoh-based games. He is a strong Trainer from the Survival Area which is close to Stark Mountain, where he loves to train.