He was red-scaled.
Rorgak assisted his master in preparing the legion for war against Menzoberranzan. He also commanded part of the tanarukk troops in the field during the Siege of Menzoberranzan. When Kaanyr decided to retreat, Rorgak oversaw the disengagement of their troops.
Rorgak also assisted Kaanyr in the attack on Sundabar and remained in control of the troops when Kaanyr and his command staff infiltrated the city and afterward left for the planes. He was possibly the first high war chief of the Legion.