I’ll go first

My supernatural being is a female named Rokee. She was a witch who was burnt at the stake during the Salem witch trials. Rokee was summoned from beyond the grave by several practicing witches 200 years later. She is 5'6" tall with red hair and green eyes. Her physical death left burn scars over half of her body. Upon being summoned, she was endowed with the powers of a shapeshifter, and often shifts to a siren so she can seduce men into doing her bidding. A humble woman before being condemned to death, she is now corrupt and wants all men to pay for her suffering. Sometimes she shifts into inanimate objects and hides nearby so she can discover a person's worst fear.