He's someone who doesn't fall in love easily and he is truly heartless like a doll with a soul. He really hates criminals because they remind him of his past. He also hates women because his aunt once tried to molest him, but the incident was prevented. Besides that, he's also indifferent, cruel, aggressive, sensitive and rude.

 police's heartless

Joker is very tall, he usually towers over every one around. He has light blue, almost white, hair. He has a tattoo of a dagger on his right cheek, right below his eye, and a scar running from the left corner of his mouth to his jawline. He wears two dangling earrings on his right ear. During competitions, he wears a matching black windbreaker with the word Sabbath running down left front panel. The words and logo, adorning the back of the jacket, is burnt orange in color.

fell in love at first sight at the bus stop

During his middle school years, Yohan had low self esteem and thought of himself as a loser, ostracizing himself from his only friends, Mijin and Zin. He overcame his jealousy by beating Zin in the boxing championship, only to completely disappear from their lives soon after.
After the incident with the cult, Yohan turns more reserved and cold. He has a bitter view of the world and believes power is the most important thing. He cannot stand optimistic characters like Vasco.