Spy Guy

Spy Guys are Shy Guys dressed in camouflage gear. So far, their only appearance was in Paper Mario where they first appeared in the Shy Guy's Toy Box. They can attack Mario with either a slingshot or a hammer, changing weapons each time they are attacked. If Mario gets hit by the hammer and fails to guard against it correctly, he loses one of his action commands for several turns.

Trivia

 * Spy Guys resemble Petal Guys from Super Mario World 2: Yoshi's Island.