Dual Elite

This new Elite form can dual wield weapons. It is not known if he is a variation of the Minor or the Major series of Elites, in terms of shields, health and general tactics and behavior.

UPDATE: Given the coloration, it is possible that this is a multiplayer Elite model and does not actually appear in the single player campaign, although this is not confirmed.

Jackal

In Halo, Jackals wielded only Plasma Pistols, which ironically were the most effective weapon against them. Some Halo 2 screenshots show Jackals wielding Needlers. This one is shown with a Plasma Rifle. Of all the enemies that have so far been revealed for Halo 2, the Jackal model seems to have undergone the most revision since the first game.

The text reads:

Jackal. No Jar Jar. Are you still trying to decode this?