Can I just point out that Garrus’ character development is essentially that of Dick Grayson.
ME1 Shepard/batman’s sidekick/robin
ME2 Well Shepard/batman is dead I’m the new Shepard/batman now.
ME3. Well I’m just gonna branch out on my own and do what I want, but I’m here if you need me aka full on nightwing
Also he’s a total ladies man