Riley

Riley Slotemaker is an inmate at the Asylum who met Charlie. He is also the Vice-Mayor's brother.

Backstory
Riley appeared briefly in SE1 EP1 when Charlie breaks out of prison. Later in Season 1, Cole remembers arresting Riley, and we see Riley being dragged into a prison van by 2 security officers and Cole standing sadly in the rain with and umbrella.

Biography
Riley was born in Cyrus City and started going crazy after a gunman murdered his teacher in school. By the time he was 18 he murdered someone too, and that was when Cole had to arrest him.