Sonic is essentially a doppelganger of his Mobius counterpart. The only difference is that he has a large belly and visible man breasts.
Sonic has a same personality as his Mobius counterpart, albeit darker, more arrogant, and more self-involved. He was a cruel and lazy glutton who spent most of his time eating chili dogs and not enough time running to burn away the calories; because of this, he became obese. He has ridiculously high standards of taste, firing a cook because he thought his chilli dogs were inadequate, though his counterpart believed they were very delicious.
After having seen how the people suffered under his and his siblings' corrupt rule, Sonic had a change of heart. Developing sympathy for his people, Sonic resolved to become a kinder and more generous ruler over his people.
Powers and abilities
Sonic is able to run at super speeds. Due to being severely out of shape however, he is not nearly as fast as his Mobius counterpart. He also shows a degree of proficiency with firearms, easily hitting his Mobius counterpart as he sped away with his gun.