The giant snake boss in the original Resident Evil is named Yawn. This enormous serpent attacks Chris Redfield or Jill Valentine inside the Spencer Mansion during the game’s early mansion exploration.
Yawn is one of the original game’s memorable creatures, alongside zombies, Cerberus dogs, hunters, and the plant known as Plant 42. The snake’s name appears in the game’s enemy and scenario context, although it is often remembered simply as the giant snake. The encounter emphasizes the game’s pattern of returning to familiar rooms after discovering new keys and hazards.
Yawn is not the same creature as Black Tiger, another giant spider-like enemy in the mansion, or Neptune, the shark encountered in the guardhouse. The name can also be overlooked because the original game’s limited inventory and fixed camera make the encounter feel more like a survival challenge than a conventional action boss fight.