Franklin Hall

Franklin Hall was a Canadian scientist. He was a former asset for S.H.I.E.L.D. and became famous for his work and theories on the extremely rare element known as Gravitonium. Desiring to escape S.H.I.E.L.D. he leaked his location to his former friend Ian Quinn hoping to weaponize the element. He was caught up by Phil Coulson's team and thrown into Gravitonium. He was a master scientist.