Marvel's Agents of S.H.I.E.L.D. returns Tuesday, October 1 at 8 PM ET on ABC with "0-8-4", following the highly-successful "Pilot" episode last week. A new TV spot has surfaced which includes scenes that tease the arrival of Dr. Franklin Hall a.k.a. Gravitron (Ian Hart), who we reported earlier this month makes his debut in "The Asset" on Tuesday, October 8. In the comic books, Hall created an experiment where he was able to fuse gravitron particles with his own DNA, causing him to have the power to manipulate gravity at his own will. While it wasn't known if Hall will transform into Gravitron right away when we first reported on the character, it seems we have our answer now. Check out the latest footage and be sure to stay until the very end when this superhero series returns next week.