Sonic also howls like a real werewolf at the start of a night stage, and he also can run at higher speed on all fours like a wolf, so it is suspected that he gained a little wolfish behaviour. Rather than using a counted number of rings, Sonic uses a health bar, collecting rings refills the bar. He attacks with his arms and fists, which is able stretch out and punch his foes. Sonic the Werehog also features a different gameplay than Sonic. When transforming into the Werehog (or transforming back to normal), a light and a cloud of purple smoke envelops him. Sonic transforms into Werehog at night, which makes his quest more complicated. Sonic only transforms at night because that is the only time of day when Dark Gaia can move about and affect people, making night the only time when Dark Gaia can also affect Sonic.

It is stated in-game that it is Dark Gaia's power is what causes Sonic's nightly transformation into this form.

Eggman used a machine to painfully suck out the power of the Chaos Emeralds in its entirety from Super Sonic, with which Eggman would fire a special laser weapon at the Earth, releasing and awakening the creature known as Dark Gaia from the core of Earth and in the process, a small amount of Dark Gaia had infected him.

Sonic the Werehog is Sonic's bestial werewolf-like form in the game Sonic Unleashed.

Sonic unleashed enemies