Are Jack, Morinth and Legion the only characters that can show up as enemies?

I know that if you fail to complete Grissom Academy, Jack becomes a Cerberus Phantom. I know Legion becomes a Nemesis if you sell him to Cerberus, and I know that when you choose to have Morinth over Samara, that she becomes a Banshee. Does this happen to any other characters along the way?

Submitted Answers

From major_csi_fan on Jul 12, 2012 7:29 pm GMT

How do you fail grissom acadamy and when would you see jack as a phantom ? , I sold legion to cerberus and all that happened in ME 3 he is replaced by a Geth VI
From jul320 on Sep 25, 2012 9:59 pm GMT

I don't recall Jack ever being turned into an enemy. Morinth definitely becomes a banshee. And Legion isn't present in ME3 if you sell him.

And no, there aren't any more former quad members becoming enemies,
From Trigger_Monkey on Nov 8, 2012 6:00 am GMT

You see Jack as a Phantom at Horizon if you didint complete Grissom Academy within a certain time period. Legion does not appear as a Nemesis, He is his own enemy called Legion Asassain. Morinth will appear as a Banshee just by having her survive ME2.

Oh, and yeah, those are the only ones.
From Amrath on Nov 18, 2012 7:47 am GMT

Technically Wrex as well but Shepard only fights him in a cutscene. If you side with the Dalatrass Wrex eventually discovers your betrayal.
From BingKafei on Dec 29, 2012 7:19 am GMT

I WISH there was some way to play to make Jacob a phantom...but no, you've listed all the known ones.

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