Fenri Lunaedge (フェンリー・ルナエッジ Fenrī Runaejji) is one of the bosses of Mega Man Zero 4. He is a Mutos Reploid based on the wolf Fenrisulfr (also called Fenrir) from Norse mythology. He is a member of the Einherjar Eight Warriors who occupies the Hibernation Chamber, where old Cyber-elf experiments are awakening.