The Big Bang Theory Quiz

Everything about the cast of The Big Bang Theory, the Pasadena-set CBS sitcom that ran for twelve seasons from 2007 to 2019. The type-in covers the ten principal cast members only: the performers credited as series regulars across the run, not recurring supporting players, guest stars, or the celebrities who appeared as themselves. 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, pick the real regulars out of a grid of same-era, same-network sitcom decoys, and answer real trivia about the series. Cast sourced from billing order, corroborated against Wikidata and Wikipedia.