User:Canada Dry/Casting/De facto cast

The de facto cast is made up of guest stars or Special Guest Stars who, for all intents and purposes, serve as members of the main cast.

De facto cast members appear in a majority of the episodes and are heavily involved in multiple story arcs. Sometimes, such as in seasons 4 and 5 they can serve as a "mid-season replacement", while other times they appear from the start of the season.

In some cases they are bumped to the main cast in later seasons. Season 4 contained several main cast changes, including the promotion from de facto to actual main cast for Lana Parrilla and Roger Cross.