Following a Friday panel at Comic-Con International in San Diego that confirmed the introduction of Ghost Rider, "Marvel's Agents of S.H.I.E.L.D." debuted a convention-exclusive Season 4 poster by Mike Perkins and colorist Andy Troy, and a trio of behind-the-scenes videos.

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These aren't just any videos, however: They're a Season 3 gag reel, and screentests featuring Iain De Caestecker, Elizabeth Simmons, Chloe Bennett and Brett Dalton.

"Marvel's Agents of S.H.I.E.L.D." Tuesday, Sept. 20, in its new timeslot at 10 p.m. ET/PT on ABC.