Clark Gregg, fan favorite Agent Phil Coulson on Marvel’s Agents of S.H.I.E.L.D. posted this image on his Facebook page. Here he is hugging / attacking / putting a sleeper hold on his Much Ado co-star Nathan Fillion from Castle. Now its not the photos, but rather the caption that is really interesting. Now it’s obviously a joke… I think Marvel would want to save Fillion for a bigger role in the MCU at some point… but a SHIELD crossover with Castle could be possible as both are on ABC and Marvel has done the comic adaptation of Richard Castle’s novels in the past.
It is something to think about.