Dr. Franklin Hall is a Canadian physicist and former asset for S.H.I.E.L.D.. Hall is famous for his theories on and possible applications for the extremely rare (artificial) element known as gravitonium.
He went to the University of Cambridge and one of his classmates was Ian Quinn. The two became friends as they shared the belief that all information should be free to whomever can use it. Hall also developed his theories about the rare and mysterious element known as gravitonium during this time. Hall recognized the danger of his theoretical element, whereas Quinn thought only of how to exploit it.
After discovering that Ian Quinn had discovered a large quantity of gravitonium and fearing what Quinn would do with such power, Hall arranged to have himself kidnapped by Quinn and brought to Malta, where Hall pretended to work with Quinn towards his goals.
In truth, Hall was determined to destroy the gravitonium, along with Quinn and himself, in order to keep the world safe.
What Hall didn't anticipate was a S.H.I.E.L.D. extraction operation lead by agent Phil Coulson attempting to effect Hall's rescue. Coulson, after determining that Hall's plan would harm much of the local population, disrupted Hall's plan and shut down the gravitational generator.
The gravitational after-effect drew Hall into the mass of gravitonium, enveloping him.
Coulson ordered the mass of gravitonium be secured in an unmarked vault at The Fridge, a S.H.I.E.L.D. storage facility. Unbeknownst to Coulson, Hall still lives within the mass of Gravitonium and seeks escape. Unfortunatley, he never sees the light of day again, and in The End, General Talbot is blasted by Daisy Johnson into the ship holding the gravitonium, thus destroying the gravitonium, killing Hall along with Carl Creel and Ian Quinn.
- In the Marvel Universe, this same explosion that intermingles his molecules with the sub-nuclear graviton particles, provides Dr. Hall the ability to control gravity. As a man with great ambition and new-found power, Hall takes on the new identity of the supervillain Graviton, who proves a serious and recurrent threat to the entire assembly of Avengers.