Loid Forger (ロイド・フォージャー, Roido Fōjā?) is the main protagonist of the SPY x FAMILY series. He has discarded everything about his past to work for his country as an undercover spy who acts under the codename "Twilight" (〈黄昏たそがれ〉, <Tasogare>?). His real name is unknown, and he created the name "Loid Forger" as an alias.

For his current mission, he is required to marry and have a child. Thus, he enters a marriage with Yor Briar and becomes the adoptive father of Anya Forger.