Anti Guy

Anti Guys are Black Shy Guys that appear in Paper Mario. They are also known as Deadly Guys by in-game characters due to the fact that their attacks are extremely powerful. They are the strongest non-boss enemies that Mario battles. In the game, Mario first encounters an Anti Guy in Shy Guy's Toy Box. This Shy Guy is guarding a treasure chest holding a Power Plus Badge. If spoken to, he demands that Mario backs off, but the player can get him to battle him/her and get the badge by beating him. Later, in Bowser's Castle, the second of three Guard Doors gives Mario a "best three of five" quiz. If passed, Mario can pass. However, if failed, Mario has to face three Anti Guys.

Lemon Candy is quite possibly an Anti Guy's favorite treat. Instead of fighting the Anti Guy in Shy Guy's Toy Box, Mario can instead bribe the Shy Guy to leave by giving him a Lemon Candy, allowing Mario access to the Power Plus Badge. However if Mario does this, he cannot fight the Anti Guy to earn the large number of Star Points awarded upon his defeat in battle.

Black Shy Guys from Yoshi's Story look very similar to Anti Guys and are closely related, given that both enemies are powerful types of Shy Guys working for the Koopa Troop. The only difference is that these Shy Guys are fighters, whereas the ones from Yoshi's Story are fliers. Worthy of note is that the masks of Anti Guys are gray, unlike the masks of other Shy Guys, which are white.

Trivia

 * The third Guard Door claims that he has better defense than the other Guard Doors; this means that he believes that the Koopa Bros. are better fighters than three Anti Guys. Then again, this is unconfirmed, as the player ends up facing Jr. Troopa instead.