He is abrasive, hot-blooded, rash, and stubborn, often times impulsive and quick to lash out. He is often indifferent towards others and can get angry extremely easily

know how unfair the world is..

The character of Tails is portrayed as a very gentle, kind, comforting, and humble fox. As a longtime friend, he admires Sonic and dreams of being just like him. He wants to prove that he can be counted on, and has fought Dr. Eggman and his robots without the aid of Sonic before.

Tanjiro is very kind by nature and has been described by others as having very gentle eyes and a compassionate persona. He exhibits a great deal of determination and will not give up once he has a goal to achieve; the best example of this being his relentless quest to find a cure for Nezuko. Even though he is relatively strong on his own, Tanjiro isn't opposed to asking others for help when he needs it. He is very protective of his friends and even more so of his younger sister.

Sonic hates oppression and staunchly defends freedom. Although he is mostly quick-witted and easygoing, he has a short temper and is often impatient with slower things. Sonic is a habitual daredevil hedgehog who is honest, loyal to friends, keeps his promises, and dislikes tears.