Question: will agents of shield appear in avengers?
Answer: None of the MCU Avengers appear in Agents of S.H.I.E.L.D.. ... Sif appeared in two episodes but she was never a part of the Avengers in either the movies or comics. That's just the MCU though. Agents of S.H.I.E.L.D. has introduced quite a few characters to the MCU that were part of the Avengers in the comics.