Charlie Morningstar - she is happy go lucky nice and is optimistic she's a princess of hell to and is dating vaggie trying to stop the exterminator angels from killing demons or "sinners"

Alastor - creepy an overlord of hell and is the "radio demon" as his overlord title 

Vaggie - dates Charlie is over protective of Charlie and is a female and is lesbian is an ex exterminator used to kill demons is good with spears

Angel dust - pornstar and slutty works with Charlie and dates husker 