Traitor (勧誘, Kan'yū?), also known as Invitation, is a status effect in Final Fantasy Tactics. A Traitor leaves their party and joins the opposing party. When afflicted, the target's portrait will either display Guest if the target joins the player's party, or Enemy if they defect to the enemy's side. Guest targets can be recruited into the party permanently. The AI will never try to invite the player's units, even under Confusion, and even if Invite is the only option possible. Any number of units may be Invited during a battle.
The word "traitor" may also be used to describe a person who betrays (or is accused of betraying) their own political party, nation, family, friends, ethnic group, team, religion, social class, or other group to which they may belong.