Japanese Title: When Yadon Becomes Yadoran
Original Airdate: October 15th, 1998
US Airdate: October 2nd, 1999Ash decides to join his mom and friends who are vacationing on Seafoam Islands. While there, he searches out the programmer of the Pokédex to get information about the evolution of a Slowpoke. The mystery of how Slowpoke evolves into a Slowbro is surprisingly revealed when Team Rocket makes their usual bumbling interference.
- Delayed Reaction: Psyduck takes several seconds to register getting pinched by a Krabby.Misty: Well, I guess it takes quite a while for that big a pain to find that small a brain.
- Identical Grandson: Professor Westwood V looks exactly like Westwood I through IV.
- Insistent Terminology: Professor Westwood insists that he be addressed as Westwood V.
- I Was Quite a Looker: Westwood V appeared to have cut a dashing figure, assuming his portrait wasn't painted to a romantic ideal rather than a true representation of the idiosyncratic facial qualities of the person in question.
- Kill Steal: Jessie butts in front of James to catch a Shellder he got the last hit on.
- Pokémon Speak: The "conversation" between Psyduck and Slowpoke.