One of the Hræsvelgr's pilots (the Gunner) and Arque's husband. He and Arque love each other dearly. After the destruction of the Paris server, he and Arque became freelance mercenaries; he would not regret throwing his life away and thinks more about where and for whom he sacrifices his life for. After Arque's death, he continues to care for her dog, Pieta, who was named after the pub where he first proposed to Arque. Chris and Shizuno later become partners when Ryoko becomes the Altair's new wizard. His surname, Avenir, means "Future" in French.