It was a side effect of Dr Eggman's machine, when Eggman drained the Chaos Emeralds power while Sonic was in his Super form and released Dark Gaia it had an effect on him and he transformed into the werehog, this is only in Sonic Unleashed though as since it was caused by Dark Gaia being released and the Chaos Emeralds losing their power it would be assumed when they were both restored, so did Sonic's original form.
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No, he can't. Sonic can only turn super when he is a hedgehog, not a werehog!
Sonic changes into a werehog when it's night and the Full moon is out like a Werewolf.
You CAN'T. The Werehog can do nothing the good ol' Hedgehog can do.
Were Sonic or most commonly known as the werehog is a character from the game Sonic Unleashed.Sonic becomes the werehog by being hit by Eggmans ray.He only turns into the werehog at night.
hes half Werehog in the game