- anton1792
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- Noble Legendary Member
"Find where the liar hides, so that I may place my boot between his gums!" - Rtas 'Vadum
There most likely are other races. The entire Halo franchise, with the exception of the Ark and possibly the Halo Wars Shield world, Alpha Halo and Delta Halo, is set within the Orion arm of the Galaxy. That is not a vary large portion of the Galaxy. Also, the Covenant are a collective of Races, each race coming from a different planets within the Orion arm.
Also, a race does not appear to the Covenant once it has reached a particular level of advancement I believe, and Truth notes in the novel Contact Harvest that species are free to join the Covenant if they wish. So there may be other races within the Orion arm that are not a part of the Covenant, and there are certainly other races elsewhere in the Galaxy. They may play a role later in the series.