@gamingonlinux The clever part of ME1 is almost all the characters are reflections of what kind of character you decide your Shepard should be.
Do side with Ashley's viewpoint and be "humans first" because of previous conflicts with Turians? Or do you take Kaiden's POV, that humans can't be trusted to wield power responsibly, having grown up in an alliance camp that trained child soldiers.
Garrus is simply the Lawful vs. Renegade viewpoint character in the equation.