Sliding Scale of Ascending Extras:
- 1: A secondary character becomes one of the main characters.
- 2: An actual extra gets a name and a few lines.
- 3: A guest star who was only supposed to be there for one episode becomes a part of the recurring cast.
- 4: A Living Prop becomes one of the supporting cast.
- 5: Ryan, a crewmember who was accidentally left in one shot of the show, becomes the main character.