Graviton

Dr. Franklin Hall is a minor character from the Marvel/ABC series Agents of S.H.I.E.L.D.

"The Asset"
Dr. Franklin Hall was a physicist, even teaching Leo Fitz and Jemma Simmons who went on to join Coulson's team. He devoted his life to experimenting with gravitonium. When Quinn captures him while being transported and gives him the chance to work with a full size gravitonium generator. He tries to use the generator to destroy the island and taking Quinn down with it. Coulson however stops him, causing Hall to fall in. S.H.I.E.L.D. operatives lock the generator into a vault but it is seen that he is stuck inside it

Comics
Franklin Hall is a physicist involved in an experiment in a private research facility in the Canadian Rockies. A mistake in Hall's calculations causes graviton particles to merge with his own molecules, and Hall later discovers that he can mentally control gravity. Hall at first tries to hide his newfound ability, but becomes tempted by the potential power, and donning a costume adopts the alias "Graviton."