Sonic the Werehog, also known as simply the Werehog for short, is a transformation that appears in the Sonic the Hedgehog series. A bestial, werewolf-like form of Sonic the Hedgehog, 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.

Sounds Used:

Werewolf Howl (An American Werewolf in London)
Mighty Joe Young
King Kong Roars
Hulk Roars
Big Cat Growls