The Arbiter is a central Sangheili character in the Halo games, introduced as a playable protagonist in Halo 2 in 2004 alongside Master Chief. The title is a rank given to disgraced Covenant warriors sent on dangerous missions. Lines accusing the Arbiter of betrayal fit the series themes of divided loyalties between the Covenant and humanity. Clips like this circulate in gaming communities as short reaction sounds, reused whenever a player, character or friend appears to change sides unexpectedly.