This article or section's title is a callsign, an alias, or a nickname, as no proper name for the subject has been revealed. You can help by adding it if it is now known.
|This article does not have enough inline citations/proper citation format. You can help Halo Nation by adding citations.|
This unidentified Sentinel variant is a Forerunner machine seen on Installation 00, also known as the Ark. One such machine killed Henry Lamb when he attempted to touch it, by stabbing him and boring into his neck.