How should I name this characters origin?

[AppleMaker]

This character came out from my somewhat bizarre dream and I'm planning to polish their writing a little bit (basically remove some nonsensical moments, give him a bit more characterization, make this story more structured and longer and etc). So here's some questions:

• How should I call his origin, if it's just the thing that randomly appeared in my dream and I'm not planning to making verse out of it?
• Is it even allowed to add them in the first place?

 

[Oiguana2701]

I think you can add them. The original characters I added to FC/OC came from dreams, although I essentially rewrote their stories. To name their origin, you should probably just create a title for the dream you had or something similar