User blog comment:Urdnotgrunt/Krogans more specifically wrex and grunt./@comment-170.135.241.46-20100311180325

I think it's because he's a newborn and doesn't really have a history. As such his personality is sort of a work in progress. Wrex is like Zaeed. He's got a rich history of battles, jobs, rivalries, etc. Unlike Zaeed, Wrex didn't really prattle on about them though. Also, Wrex just looked badass - big crimson crest, scarred face, red eyes.. Grunt looks a lot softer with the bony plates instead of the crest and the blue eyes. I think given time, Grunt could become a lot more interesting in that he's a "pure" Krogan. But that takes experiences and battles that I'm not sure he's got time for in this trilogy.