The Berserker Staff is an ancient Asgardian weapon left behind on Earth centuries ago by an Asgardian soldier. The Soldier broke the staff into three pieces and hid them across Europe. It was recovered by a group of Norse Paganists who wanted to use the staff to aid in their terrorism. The staff was later taken into possession by S.H.I.E.L.D., then HYDRA, then S.H.I.E.L.D. again.