Mothim was first seen as a Burmy in Some Enchanted Sweetening! when he was lured to a Sweet Honey Tree which Cheryl put Honey on. When he appeared, Cheryl checked his gender by having her Chansey use Attract on him. After catching Burmy, Cheryl explained how she was a treasure hunter and needed a male Burmy to evolve into a Mothim. She then shown Ash and his friends that she had three Wormadam and explained that she needed a Mothim to assist her in finding the Amber Castle.
Throughout the episode, Cheryl was trying to get Burmy to evolve, but Burmy lost all of its battles. He then got stolen by Team Rocket and when battling against Team Rocket, Burmy evolved.
In the next twoepisodes, Mothim followed the scent of Honey and eventually found Amber Castle after leading the group back to the same tree it was caught on and into a unpleasant encounter with a Gloom.
Personality and characteristics
When battling, as a Burmy, he showed a lot of confidence, seeming very committed to evolving for his new trainer. This commitment was further showed while sniffing out the Sweet Honey and finding the Amber Castle. Despite losing his training battles, Burmy was never discouraged and never fearful after being kidnapped by Team Rocket, interacting with Meowth oblivious of any danger he could have been in.