The Shapeshifter was added to Among Us in the November 2021 roles update from Innersloth, alongside Scientist, Engineer and Guardian Angel. As an Impostor variant, it lets a player morph into any other crewmate for a limited time, creating alibis and false accusations during meetings. Clips of the transformation and its warning line spread through gameplay videos, streams and short edits, where the sound became shorthand for impersonation. It remains popular because almost any disguise reveal, twin swap or suspicious double can be explained with this one recognisable gaming cue.