This is my sup Old Shylock Piece from last campaign!
So I am making my backstory that you are demanding and to be honest it is probably going to be awful.
Shylock is a senile old man who never really remembers much of his past, he figures it was just because he has grown so damn old. But the reality is much much darker. Shylock never truly had a youth, always entering life near the latest stages and never remembering his past lives until he dies. Shylock was once a Demi-God who had relations with the Trickster Goddess Lolth and Lolth had grown madly in love with Shylock. When Shylock ended the relationship Lolth went into a fury playing a never ending trick upon Shylock.
Shylock's only true aim in life is to obtain his youth by any means possible, for the most part he deems this impossible so he ends up just partying and having way too much fun. Which is how he met the majority of his companions by just having a lot of fun and always living on the edge. Shylock is always willing to do anything but there is always a small tick in the back of his mind of a past life. A tick he just cannot remember....