Everything about the cast of Seinfeld, the sitcom about nothing that ran from 1989 to 1998. The type-in covers the four series regulars only: the performers credited in the opening titles, not the recurring neighbours, parents, lawyers and soup vendors the show is equally famous for. Name the actors (the answer is always the actor, not the character), match each headshot to its name, snap each character to the performer who played them — that round reaches well past the four into the show's best-known recurring roles — pick the real regulars out of a grid of same-era sitcom decoys, finish the show's most quoted lines, and answer real trivia about the series. Cast sourced from billing order, corroborated against Wikidata and Wikipedia.