Chuck Cunninghams

Characters who have undergone Chuck Cunningham Syndrome. Characters who used to be fairly recurring extras, but overtime, have slowly started to appear less and less often, to the eventual point of being completely absent for a long stretch, if not, the rest of the series. A number of these characters have made eventual comebacks, while others have still been completely forgotten to this very day.

Note: Characters who have stopped appearing due to being killed off, (i.e. Diane Simmons and Mr. Weed) do not count as "Chuck Cunninghams", as their prolonged absences have been justified due to in-universe reasons.

Also, Cleveland doesn't count either, due to his absence being done in part to his spin-off series.