Flannery made her debut appearance in Poetry Commotion! where she was training with her Slugma. She revealed that she was the new Lavaridge Town Gym Leader after her grandfather, Mr. Moore retired to become a poet. As such she was shown to be inexperienced and relatively incapable, traits which caused her to forget to clean up the gym since the last challenger's match. In an effort to remove the wait needed for his next gym battle, Ash volunteers himself and his friends for cleaning duty.
While cleaning, the group are helped by Jessie and James of Team Rocket who are disguised as construction workers as well as the former gym leader, Flannery's grandfather, who is disguised as a judge. Flannery's grandfather saved the day when Team Rocket attempt to steal Flannery's Torkoal. In the resulting battle, one of her Slugma evolved into a Magcargo.
In Going, Going, Yawn, Ash had his gym battle where he used his Corphish, Pikachu, and Treecko. Ash won the battle and the Heat Badge.