User blog comment:H-Man Havoc/New Squadmate Species for ME3?/@comment-1655340-20120227081750

So, we have, at any given point in the last two games, been given, as squadmates, the ones you mentioned above (I would list them, but it would be redundant). So, we're missing the folowing races: the batarians (obviously), the hanar (the drell are their step-in, though), the volus (BIOTIC. GOD.), the elcor (as you said, it would be implausible for this to happen, but not outside the realm of possibility), the yahg (just think, having a yahg and a krogan as your squaddies on a mission... and it's plausible too, if you read the "Culture" section of the yahg page), the raloi (this would be the perfect time to introduce them to the games), the virtual aliens (but it's unlikely), the vorcha (they just love Shepard so, soo much), and the rachni. The Reapers, Collectors, and Protheans don't count because the first is the main enemy of the game, the second is basically destroyed completely, and the third because we already have one.

So, looking at it, we have potential for a squaddie to represent the batarians, yahg, raloi, vorcha, and possibly volus and rachni.