Ashley Williams (Comonly known as "Ash") is an annoying bitch with an annoying voice, stupid martyrdom desires and low self steem; she can be left behind on Virmire (thanks god), and can be used [if male] to deposit Shepard's pride on her mouth.

-Her name "Ash" also makes sense with her ironic dead (if abandoned instead of Alenko) on Virmire [since she turns into ashes after the nuclear blast... Lol]

There is a saying going around the Normandy: "If it looks like a dog and it... ah what the hell, it's ash"