User blog comment:James12708/Yahg in multiplayer?/@comment-4967682-20120506215130/@comment-4947746-20120509174301

@Randomguy, I agree, adding them wouldnt be very good in my opinion. If you make them balanced stat wise then they are much weaker than thier in story versions, which breaks immersion and also makes little sense (and would annoy me personally, but thats just me).

And if you make them as powerful as they are in the story, then everyone would play them, because they are ridiculous.

Plus, I dont personally like them because they were tacked onto an existing story/lore for no reason, like the vorcha. And are just as out of place.

@Lightna, No, they are not peaceful, legion repeatedly claims they are, but thier actions before the stories of 1, 2 and 3, and thier actions during, contradict that.

And hell, *spoiler alert* as soon as you recruit legion, he is covertly leaking classified intelligence and preparing for a goddamn strike against the quarians. Does that sound like the actions of a "peaceful" individual/species? Of course, that is not the only example, but one of the more striking ones