Frankie

Frankie is a demon who is composed of other demons and angelic beings. Satan (or Lucifer) wanted to create a demon powerful enough to lead his army and take over his throne if something were to happen to him. In doing this, he gathered all the strongest and smartest of all the demons (he even used some fallen angels who refused to pick a side in the war), slaughtering them and taking parts of them to create the one now know as Frankie. Frankie has a hard time staying together mentally because he struggles with the many souls that create him. He often shifts personalities when in certain circumstances (in short he has multiple personality disorder). 

Frankie showed no interest in becoming Satan's pet or his successor. All he showed interest in is science and gaining more power. Though, it upset his creator, Frankie was still of good use. Due to the fact that Frankie can basically add more pieces to himself, and cannot die, he was set free to go wherever he choses to gain more knowledge and abilities.  More than often he forgets to report back to his creator and ignores orders. Frankie lives a leisurely life roaming wherever he wants doing whatever he please. 

He mostly studies humans and other creatures he happens to come across. Due to his appearance it makes it hard for Frankie to blend in with humans. He hides in the shadows and mostly goes out at night. He can been seen around the strange "goths" or apart of nerd settings. 

Though, as of recently Frankie has been tracking down a certain fallen angel creature. She fascinates him and her reactions he finds extremely comical. His studies of her have lead him to get rather close to her. Close enough for him to tease her and make his presence known.... [This part shall be continued for a later add on]