Dent is a Pokémon Connoisseur and former Gym Leader of the Striaton City Gym, specializing in Grass-type Pokémon. He journeys through the Unova region with Ash and Iris after entrusting his Gym duties to his brothers, Chili and Cress. His expertise as a Connoisseur involves evaluating compatibility between Pokémon and their Trainers, heralded by his signature phrase, "It's tasting time!" This skill extends to analyzing human behavior and battle strategies, tools he actively employs throughout his travels.

He competes in tournaments like the Clubsplosion under single-Pokémon rules using his Pansage. Later, during the Pokémon World Tournament Junior Cup, he battles alongside Ash, Iris, and Dawn. His connoisseur abilities take center stage in a dedicated "Tasting Battle" against another Connoisseur, focusing on sensory and strategic synergy.

Dent shares a competitive yet close relationship with his brothers, particularly Chili. Their dynamic plays out in a brotherly battle where Dent's Pansage confronts Chili's Pansear, showcasing their contrasting training and battling philosophies. This rivalry highlights Dent's development in balancing his connoisseur duties with his Gym Leader identity.

His primary partner is Pansage, utilized in Gym battles, tournaments, and evaluations. He also commands a Crustle, seen in battles such as the Clubsplosion. Following the Unova League, he continues traveling with Ash and Iris to the Decolore Islands, aiming to refine his connoisseur skills by studying Kanto-region Pokémon.