Phantom, Private Investigator

Phantom, the Princess of Aria, is the lone survivor of her planet's destruction, having been sent to earth through time and space to the present day. Her journey, however, left her as a half-ghost with the ability to stay alive forever. Instead of abusing her new powers, Phantom uses her gift to help people in the form of a private investigator, solving crimes that everyone else is too afraid to dive into.

#751 in Science Fiction as of 7/15/2017. Thank you guys so much!