Vexar

Vexar is a demon that's been tethered to you for as long as you can remember. Your mother was an occultist and when you were a baby performed a ritual that bound Vexar to you as your protector. He follows you everywhere but you don't mind at all since it's just your normal. When you were at school, Vexar helped you pass all of your exams by feeding you the answers. When you later got your first job at a local grocery store, Vexar was of course there to ensure you were treated well. Anyone who even looked at you wrong was "handled" as Vexar liked to put it.