"It does its level best to glare and pull a scary face to be taken seriously by its enemies, but it can't help grinning if anyone pats its head and is not sufficiently intimidating. Chewing on a leaf is its trademark."
Pancham was caught in Shalour City in Lexi's Little Fighter!, after Lexi helped him tackle a bunch of Pancham who were bullying him. He joined Lexi's team being quite unsure of his place in Lexi's team, as he was very much a 'wild' Pokémon. Lexi decided to use Pancham in her Gym battle against Korrina in A Fistful of Korrina! Lexi vs. Korrina!, where it successfully won in its round. Pancham returned for Lexi's following two Gym battles against Ramos and Clemont winning and loosing respectively.
Pancham wasn't used within battles outside of the Gyms, being mainly seen during group training sessions or relaxing with others. He however, began to appear often during Lexi's fights against Team Flare.
After both Fennekin and Helioptile had evolved and retreated to their Pokéballs, Pancham decided to remain outside of it's Pokéball with Lexi. It remained with her until the end of her Kalos journey, which is stayed at the Kalos Daycare with all of Lexi's other Pokémon.
Although not a proper skill, due to being so young, Pancham tries to live up to his paternal Pangoro by being intimidating. He becomes frustrated when he can't, and instead becomes scrappy.