Fein (Japanese: フェイク Fake) is a Cipher Peon who appears in Pokémon Colosseum. He is encountered after Wes has snagged 47 of the 48 Shadow Pokémon in the game. A series of emails on Wes' P★DA regarding his attacking people (most notably, the Jogger in Phenac City) with a Shadow Togetic, leads Wes to Outskirt Stand where he encounters an impostor of himself, dressed to look identical to him down to the very last feature. He is known as Shady Guy during battle, and his name will be the same as the player character's own.
Upon being defeated, he reveals himself to be Fein, a Cipher Peon and a master of disguise. He wanted to tarnish Wes's reputation around Orre; it nearly worked, as Wes became unpopular with some of Phenac City's citizens for a short while. But after watching the next TV broadcast, the citizens forgive Wes, realizing it was an impostor who did it and not Wes himself. Fein serves as the game's "final boss," since he has very high-leveled Pokémon.
Fein can be rebattled until his Shadow Togetic is snagged and he is beaten, after which he will vanish for good.
- When the player rematches a Cipher Admin or Gonzap, if that person's Shadow Pokémon was snagged in one of the last matches, that person will use a replacement Pokémon. Excluding his Shadow Togetic, all of Fein's Pokémon are those replacements.
- Before he is battled, Fein will say "I am you and you are me and we are all together," referencing a line from The Beatles song I Am the Walrus.