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This planet, estimated to be less than 10,000 km in diameter, was used as a failsafe measure to be set on a collision course with Installation 07 which was in possession of 032 Mendicant Bias who stole it from the Forerunners. The failsafe collision caused the Installation to be reduced to its diameter of 10,000 km. This was enacted by rogue Lifeworkers and presumably the Master Builder in order to stop 032 Mendicant Bias, in the event that they failed or finished finding a cure for the Flood on the ring in any genetic memories or observed immunities of humans. The appearance of the planetoid loosely resembled that of a wolf's head possibly crafted that way to maximize its destructive capability at the point of collision with Installation 07.
- Halo: Primordium (First appearance)