Hetzer is a unique, geometrically interesting Entity, formerly a player named Blackout. He became this entity at some point after being killed by Circuit, an event depicted in Record 14.
It is known that Hetzer "teleports" entities for self-defence, but it is unknown why the entity of its choice is specifically Circuit.

Hetzer appears to be a "spheroid" consisting of three rings, one on each axis, surrounding a small cube at it core. Its texture is white noise.
Hetzer will appear and remain suspended in its place of origin, its model constantly shaking and visually teleporting around.
Looking at Hetzer will cause it to disappear, give the player Blindness for 0.25 seconds, and play false_subwoofer_lullaby.ogg. After 50 seconds, all sounds will abruptly stop and the time of the day will be set to midnight. 10 seconds after that, 1 minute total after it disappears, one of the following will happen: