Age: 38. Occupation: math teacher. Gender: male. He is very smart and kind,he doesn't like naughty children if he will finds a naughty child,he will immediately kill the child.
Also doesn't like bullying at school if there are children what bullying he will kill them one by one. He also doesn't like his students' grades being low...and he will kill them because he thinks what his efforts are in vain.
Also his right hand replaced by giant metal ruler. He using it for killing.