Porcupine guard

Porcupines were enemy guards faced by Sly Cooper and the gang in "Of Mice and Mechs" of Sly Cooper: Thieves in Time. They served as rooftop guards.

Description
They are brown in color without any clothes and carry a large extendable mace. They will swing this mace above their heads, which will extend the mace a reasonably long distance. They throw rocks at the player from long distance and will occasionally dodge attacks.

Trivia

 * In concept art, these guards can be seen carrying shields and swords.
 * These are the second guards in the Sly Cooper series to have a mace as their weapon of choice, the first being the wolf guards in "Jailbreak" and "A Tangled Web" of Sly 2: Band of Thieves.
 * When these guards spot you they jump up in the air and yell "What the...?!"
 * Their real-life counterparts are not native to Eurasia, although hedgehogs are.