Sonic is actually quite sadistic, but tries to hide it from his friends.
He loves taking on Eggman because robots can be destroyed as sadistically as he wants without hurting an actual person.
I mean, it fits with Sonic the Werehog
forced to embody the sin he leans to- Wrath- by being a viscious, feral version of himself.
(Let’s be honest, Dark Gaia is essentially a demon.)
Is there more of These?