Hedgehogs

Hedgehogs (ハリネズミ, Harinezumi) are a species that appears in the mobian-like planet. Unlike the real-life species, hedgehogs in the franchise are anthropomorphic animals of said species, and many prominent characters in the franchise are hedgehogs, the most recognized of them being Sonic the Hedgehog. Several robotic copies of hedgehogs also exists, most of whom were created by Dr. Eggman in imitation of Sonic, the most famous of them being Metal Sonic.

Anatomy
Hedgehogs appear mainly as anthropomorphic animals of their namesake species with anatomy closely resembling humans' shapes, though their body proportions varies. Features they do share includes large heads, short fur on most of their bodies (excluding certain areas that differ between each individual) which is frequently brightly-colored, short muzzles, and spiky quills on their heads of varying styles, similar to human hairstyles.

Like humans, male hedgehogs have more masculine figures and female hedgehogs have more feminine curves. Also, while hedgehogs' exact height measurements remain ambiguous between each media, they appear to be about one meter tall at average.

Characteristics and Culture
Character- and culture-wise, hedgehogs are no different from humans, meaning they are sentient, intelligent, have their own unique personalities and can be either good or evil. They also have no known customs or culture associated with their species.

Powers and Abilities
Hedgehogs often (but not uniformly) possess special abilities including, but not limited to, Speed (Sonic and Shadow), Strength (Amy), Telekinesis (Silver) or the ability to tap into the Chaos Emeralds powers to use Chaos Powers (Shadow). It is also implied in Mystical Chronicles: The Dark Brotherhood that all hedgehogs in the games naturally possess the innate ability to move at high speeds.

Living Hedgehogs

 * Sonic the Hedgehog
 * Amy Rose
 * Shadow the Hedgehog
 * Silver the Hedgehog
 * Sir Lancelot
 * Sir Galahad
 * Nimue, Lady of the Lake
 * Scourge the Hedgehog
 * Breezie

Artificial Hedgehogs

 * Metal Sonic
 * Metal Amy
 * Metal Scourge