Ein is the brains behind the process that creates Shadow Pokémon. His research, the "Ein Files", have been littered across Orre wherever members of Team Snagem or Cipher went. He creates Shadow Pokémon in a secluded lab in the middle of a desert, and shipped the Pokémon to Lady Venus and Miror B. via the Under Subway.
Ein did everything ins his power to keep the Shadow Pokémon he created from being purified. He tried to have Rui kidnapped, the Relic Stone destroyed and the Time Flute stolen. Ultimately, he failed at all of his objectives.
Wes and Rui broke into the Shadow Pokémon Laboratory and confronted Ein. Even though Ein had a Shadow Raikou to defend him, he was unable to stand up to Wes. Ein took solace in that he had already created the ultimate Shadow Pokémon, a Shadow Tyranitar, and had it transported to Nascour and Evice. He then made his escape in a secret elevator.
Ein made another appearance at Realgam Tower. The mad scientist had one of the keys to the tower's main entrance. Wes prevailed over the madman once again, and Ein was forced to hand over the Yellow ID Card and flee.
Ein made one last appearance in the Deep Colosseum.