CT-327 was born and raised on Kamino, and was one of the many clones to Jango Fett.
After completing training, he was assigned as an ARC Trooper, and was stationed at the Rishi Outpost.
While at the outpost, he and his fellow clones experienced a meteor shower. After the meteor shower, he went out to investigate. While he was out there, he did not notice that among the meteors were a few ships carrying CIS Droid Commandos. One of them snuck up behind CT-327, and killed him.