Civil War: Young Avengers & Runaways #3 (2006)

Civil War - Young Avengers & Runaways
Noh-Varr is a former Kree soldier, captured and imprisoned on Earth. A prisoner in a facility called the Cube, he was tortured and borken until he was little more than an instrument of the mysterious warden of that place. And now the Warden has set him loose on the Young Avengers and Runaways.Noh-Varr quickly neutralizes several members of both teams, even before they can react. But when the warden of the Cube kidnaps Wiccan, Hulkling and Karolina as well as the mortally wounded Xavin when he retrieves Noh-Varr the two teams unite to take him down (without involving the grownups.)
Release Date: 2006