Alien trooper

Alien Troopers are a deleted Covenant race seen in the Halo 2 Collector's Edition disc. It is unknown exactly what this seems to be. The only data known is that it carries its weapon under its belly, and was a precursor to the Hunter in this aspect. Though it bears a small resemblance to Elites.

Trivia
The Trooper looks as if it was another mgalekgolo form.