Personal Gunmen: Kiyalunga
Kiyal is the youngest member of the Black Siblings. Just like Kiyoh, she was helping out in the Dai Gurren's control room until episode 13, when she starts aiding in the front lines piloting her own Gunmen, Kiyalunga (named after herself), which can transform into a shield and lance which are wielded by Kittan's King Kittan.
Kiyal's name comes from the word yaruki (やる気), meaning "willingness."