Jessie's Yanmega uses Silver Wind for the first time.
Ash's Gligar evolves into Gliscor.
This is the first time one of Ash's pokémon evolves using an item.
Ironically, this episode aired in Japan the same week the episode where Ash captured Gligar aired in the U.S.
Gary returns in the episode. He gives Ash the Razor Fang, which will allow his Gligar to evolve.