Failsafe was introduced in Destiny 2 in 2017 as the AI of the crashed colony ship Exodus Black on Nessus, known for alternating between cheerful and sardonic personalities. Cayde-6, the Exo Hunter Vanguard, became one of the game's most beloved characters before his death in the 2018 Forsaken expansion, which made any later reference to him especially nostalgic for players. Clips tied to both characters circulated through gaming videos, streams and soundboards, where short voice lines are reused as in jokes that instantly signal a Destiny connection.