A story without people is not a story. I’m not sure what it is but it’s not a story. You can have a great plot and beautiful settings, but if your characters are not alive, you just have words on a page.
There are numerous tools available to help us create characters. Meyer-Briggs, Gary Chapman’s Five Love Languages, character interview forms, character description sheets, family history templates, etc. They all have some value in identifying your characters.
I believe your character doesn’t come alive until he or she is in the story, interacting with other characters, striving to achieve goals. This striving creates conflict. This conflict brings both your character and your story alive. Learn more.