Prototype robot designed by the 'Mole People' faction in the Spectraverse, intended as an automated bot to demolish and expand tunnel systems without risk of harm to human workers. The bots were given a screen as a face, intended to show symbols and expressions in response to commands, and speakers on the sides of their heads to indicate when they would explode. However, the prototypes malfunctioned and breached storage, their systems corrupted beyond repair as the robots ventured aimlessly into the wild, showing no expression and only knowing to attack humanoid life on sight. Highly effective in the wrong ways.

P.S., some stored music discs for the Mole People workers to listen to during their jobs. A precise shot can sometimes break these discs out for your listening... Hint hint.