In the Pokémon anime episode (Season 1, Episode 30), Ash and his friends arrive in the gloomy, industrial Gringey City , a place plagued by pollution and smog . Pikachu’s "Cold"
: The Grimer and Muk attack the group, and even Pikachu is too weak to fight effectively. 30 : Sparks Fly for Magnemite
By the end of the episode, Pikachu is fully healed, and the Magnemite—having lost its magnetic attraction to Pikachu once he recovered—departs, leaving the city significantly cleaner and powered up again. Sparks Fly for Magnemite - Ash Gray Episode 30 In the Pokémon anime episode (Season 1, Episode
: The Magnemite that was following Pikachu suddenly summons a group of other Magnemite and Magneton. Together, they use their electrical attacks to drive away the Grimer swarm. Sparks Fly for Magnemite - Ash Gray Episode
The group investigates the power plant and discovers it has been overrun by a swarm of and their leader, a massive Muk . These sludge Pokémon have clogged the seawater intake, causing the blackout. The Climax
Upon arrival, Pikachu falls ill with a strange condition where his electric pouches overcharge and twitch uncontrollably. While Ash rushes Pikachu to the local Pokémon Center, they discover the city is suffering from a massive power outage. The Magnetic Attraction
While Pikachu recovers, a wild becomes strangely attracted to him, following him everywhere because of the intense magnetic fields his "electric cold" is emitting. The Grimer Invasion