The T-103 is a model of Tyrant, the trench coat wearing bio weapon introduced in Capcom's Resident Evil 2 in 1998 and featured again in later remakes and films. Gunshot effects tied to the character circulate in gaming communities as shorthand for an unstoppable boss fight, often shared on soundboards and in fan edits. The clip remains popular because the heavy blast instantly signals a powerful enemy and a fight viewers are likely to lose, a joke that still works in horror and gaming videos today.