Sonic the Werehog - Sonic the Hedgehog

The Werehog bestial, werewolf-like form of Sonic the Hedgehog. Sonic the Werehog is a transformation Sonic suffered once, this element appears in the Sonic the Hedgehog series. This extreme physical transformation was created when Sonic accidentally absorbed a dose of Dark Gaia's energy, although the transformation itself would only be triggered by nighttime and remain active until daytime. After using it on a number of occasions, Sonic lost this form permanently when Dark Gaia reclaimed the energy that caused the transformation. Or it should have, until now. But now, it's returned somehow! Why would that be?! Sonic's strong will prevents this Dark Gaia energy based transformation to corrupt him and alter his personality, despite still getting a bit more of a feral and bestial behavior as a Werehog. Including a slightly deeper, growly voice, a tendency to roar and howl, occasional quadrupedal movement patterns, and a shorter temper. Despite being in this form, his heart is (almost) no different than usual.