Arriving at another island, Ash and friends meet Professor Oak there. Professor Oak is on the island to do research about the Rotom changing their Forme. The group finds three Rotom. These Rotom change Forme, but they turn out to be the real troublemakers. Even with Team Rocket getting involved as they attempt to steal the Rotom, will Ash, Professor Oak and the others calm the Rotom down?
Professor Oak's Pokémon Live Caster: Rotom (mid-episode) and Gigalith (end of the episode)
This is the first time that two different Live Casters are in the same episode.
This episode marks the first time that someone mentions the existence of genderless Pokémon in the anime.
Much like in The Lonely Deino!, when Iris' Emolga steps on Cilan's Stunfisk and the Mow Rotom overrides it, it cries, even though in the Pokédex it says that "its skin is very hard, so it's unhurt even if stepped on by sumo wrestlers." This was done for comical purposes.
Though not exactly a boss fantasy, this is the first time in the Best Wishes series that Team Rocket fantasizes about the Pokémon they are planning to steal.
In this episode, for the first time since the Diamond & Pearl series, Team Rocket uses a variation of their motto.
The beam emitters that Team Rocket use to capture Rotom are similar in design to the Proton Packs from Ghostbusters.
At the end of the episode, the narrator impersonates Professor Oak. Both characters have the same voice actor.
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