||This article contains information about a non-canonical subject that, while official, is not part of the established Halo universe.
|This article is based on canon information, but the article's name is conjectural, as there is currently no official name for the subject. See the talk page for more information.
The pulse beam Sentinels are a deleted variant of Sentinel, once intended for Halo 2. Similar to Enforcers, these Sentinels used pulse beams instead of Sentinel Beams. When destroyed, they would drop pulse beam weapons identical in appearance to Sentinel beams, but with a unique targeting reticle, and they would fire red needles.
While the Needler Sentinel superficially resembles the pulse beam Sentinel, it is a glitch distinctly different.