Karlach is a playable companion in Baldur's Gate 3, the role-playing game released by Larian Studios in 2023. Voiced by Samantha Béart, the tiefling barbarian escaped years of forced service in Avernus and joins the party with an infernal engine for a heart. She regularly addresses the player character as soldier, turning a military term into an affectionate nickname. The greeting was clipped from her camp and exploration dialogue and spread through streams, fan edits and social posts, where it remains a shorthand for her upbeat personality.