Ehm ...
Im affraid this is not good idea sadly. :-/
I mean, sure ... to tell how Warlock become Warlock certainly is great ... unless your backstory is not included ingame, then in become frustrating. :-/
• I was weak and could not protect those I loved. That's when I was offered a chance to become a hero but now I am subservient to a dark power (same flavour as Wyll)
• I was an avid and brilliant scholar but couldn't progress further with my research because of the opposition of my close-minded colleagues. Enlightenment can't wait, so I called upon a higher power. I have no regrets and I'll sacrifice whatever it takes to reach my goals.
• I was raised in a world of poverty and violence. To survive, I had to become quick with my blade and clever with my tongue. The only life that has meaning is my own. Apparently, demons like those like me. We're a lot of fun to be around.
• I stepped into a forest inhabited by a powerful fey spirit when I was a child. I don't remember exactly what happened but since then I have been accompanied by a presence that my parents brushed aside as 'just an imaginary friend'. Now that I am older, I know its not the case. What does this being want from me?
• For example mine Warlock was a circus performer (entertainer background) but one day she fell from the raised bar ... and she was told that she will possibly never even walk again. She sold her soul, for get her back in business ... sadly, her miraculous healing was taken by principal with suspicion, and he didnt want her around, bcs he believe that she would bring him bad luck.
That cirkus burned to the ground few nights later, with "unexplained circumstances", and principal was the only victim.
Since then Zyraela (mine Tiefling Warlock) is walking the world as itinerant artist, that have few ugly surprises for looters that try to ambush her on the roads.
Now this is kinda problem ...
When you start implementing some backstories, you can never implement them all. :-/
Right now, i can have this short story in my head ... and nothing is holding me back. And to be honest, i kinda like it that way.
Im all in for companions like Showel, to be more present ... i would even like if our Caster have option to summon Showel specificly, since i really like him, but hes kinda fragile. :-/