Jessie's Yanmega (Japanese: ムサシのメガヤンマMusashi's Megayanma) is the first Pokémon caught by Jessie of Team Rocket during her travels through Sinnoh. She is voiced by 古島清孝 Kiyotaka Furushima in both English and Japanese.
Jessie caught her as a Yanma in The Thief That Keeps On Thieving! after Tylerbattled and weakened her. After she captured her, Yanma was sent to Giovanni as their second successful theft. However, he immediately returned her after analyzing it. Jessie then decided to train Yanma herself, not knowing that Yanma already knew AncientPower, thus when she sent her into battle. It thenquickly evolved into Yanmega.
Yanmega made her Contest debut in Battling the Generation Gap! where she was used in the Celestic Contest Appeal Rounds. Yet, she failed to get Jessie to the next round.
In Pursuing a Lofty Goal!, James borrowed Yanmega in order to enter into a PokéRinger competition. Jessie was reluctant as James failed to win the competition with her Dustox before. Like before, James failed to win with Yanmega.
Jessie captured Yanma after someone else weakened it. This echoes how she captured her Shellder. In this case, it was Tyler and his Piplup that weakened Yanma, whereas James's Weezing weakened Shellder.
As a Yanma, she is the third Pokémon to evolve in the same episode it was captured after Ash's Caterpie in Ash Catches a Pokémon and Mankey in Primeape Goes Bananas (though in Mankey's case, it evolved prior to being captured, whereas Yanma and Caterpie evolved after their capture). Because Ash's Metapod did not further evolve into Butterfree until midway through the next episode, Yanma reached its final form the fastest of all Pokémon belonging to the main characters. Caterpie also appeared in a flashback Ash had in the episode Yanma was captured.
In DP142, it was discovered that Yanmega is female. When Togepi used Attract, Yanmega was the only one unaffected while Pikachu, Meowth, Piplup, and Croagunk were. It was already known that three of the said Pokémon were male.
Related articles
For more information on this Pokémon's species, see Yanma and Yanmega.