Backstory

"What do you think of the main character of my novel?" "She's pretty interesting, but I think you need to flesh out her backstory some more."

What’s the backstory of our new colleague?

These backstories cast the characters' behavior in a new light: of course Gertrude would promptly marry the man who saved her from abuse; of course Ophelia would be desperate and indiscreet in seeking Hamlet's love.

Inexplicably, and at great risk to the integrity of the movie, the filmmakers have burdened him with a psychological back story pulled out of a folder in some studio filing cabinet. Why does [Willy] Wonka spend his days confecting sweets?

Agent Lyla: Enough back story! / Dr. Doofenshmirtz: Actually, that's not, uh … that's not really a back story, it's just expositional flashback. It doesn't, uh, have any childhood trauma, it's doesn't really inform who he is, it's not … it's just flashback. There's a difference. It's subtle, but there's a difference.

Prince Harry may yet turn out to be the crown’s best insurance policy. By marrying Meghan Markle, he is linking royalty with a 21st-century celebrity who has a backstory that many people in Britain can identify with.