Diglett can retract its head at the speed of light.
Team Rocket's Pokemon evolve.
American Title: "Dig Those Diglet!"
Team Rocket break the fourth wall once again, when they first reveal their evolved Pokémon to Ash and friends. They mentioned that their Arbok and Weezing are being shown "for the first time on TV".
This episode is extremely similar to Menokurage dokukurage (1997), in that a character is trying to build something that would destroy the area around them, and the Pokémon that interfere with it to save their area are targeted by the character to be exterminated. Additionally, the heroes are offered resort stays by both people in exchange for helping exterminate the Pokémon. The main difference between the two episodes is that unlike Nastina, the foreman in this episode realizes the error of his ways and willingly cancels the project.