The minor side character you would happily watch an entire spin off about

[Marnie]

Not the lead, not even the second lead, the background character who appeared in maybe a handful of scenes and left you thinking that person deserves their own entire show. Name yours and try to articulate exactly what those few scenes revealed that made you want so much more

The interesting craft question underneath the fun premise, what specifically makes a minor character feel like they have a whole rich life happening just off screen rather than simply existing to serve the main plot, because that quality is rare and most side characters never achieve it no matter how much screen time they get

The best answers usually point to something very specific, a single line delivered with more history behind it than the scene technically needed, a reaction shot that suggested an entire relationship the main story never explored, a competence or contradiction glimpsed for thirty seconds that implied a whole personality worth following

So nominate your character, the show or film they came from, and the exact moment that convinced you, and the harder bonus question, would the actual spin off live up to the mystery, or is some of the magic precisely in never finding out more?