This is cerberous, he is a wolf hybrid.
his eyes are rainbow naturally and the colors spin to daze and enemy.
He wears the key to his heart around his neck and has the scares from those who have tore him down to break his heart,
he wears them proud to show everyone that he will always protect his heart.
(the name Cerberous comes from greek mythology. Its the three headed dog that dwells in hates. Its shown on the movie hercules)
He stands for the truth that false love can be toxic but fighting through it for the real thing is worth it.