Unknown Killer

"Unknown Killer" is one of the characters on Arthurism and one of the main antagonists of the show.

Personality
The killer is ruthless for the ones who stand in his way. He kills the others with a cold blood. He is also very intelligent, knowing how to hide away from the police, which has given him his nickname due to never being caught. Not many know that he's more sensitive on the inside and targets his victims only when he has a reason for it. He also has a person he cares about deeply, feeling guilty for one of his past actions.