contains a lot of different races that inhabit the Milky Way, and each one has a rich and unique history. However, since players see the game from the point of view of a human, they aren't present to witness the events that defined the lives of other races.
As a race that joined the rest of the inhabitants of the Milky Way in galactic travel and politics, humans haven't witnessed many events that shaped the relations and cultures of other races that work with them after first contact was made and the resulting war resolved.
Quarians are one of many races that Commander Shepard works with throughout the trilogy, and Tali is the most notable member.Tali joins Shepard as a crewmember on the Normandy, and she can be romanced in and.
As a race, Quarians have a few defining features, with the first being the most noticeable: their suits and visors.
They're also known for their intelligence and scientific knowledge, but those abilities led to an event that was rather harmful for the race overall.