Likewise I've never heard of a Centaurian. There are several alien species in my dreams as well. For starters, asari can live for one thousand years, and we are one of the longest-lived species in the galaxy. The asari pride themselves on being leaders in the galactic political environment, and many are wise counselors. We also take pride in our Commandos, which is akin to Navy Seals and other special ops groups in the military.