Complex sentence: Taylor-Johnson first appeared as the character in a post-credits scene of the 2014 film', in which was implied he have been captured alongside her sister Scarlet Witch by HYDRA for an unspecified purpose.
Split into simpler sentences: Taylor-Johnson first appeared as the character in a post-credits scene of the 2014 film'. In this scene it was implied he was captured alongside his sister Scarlet Witch by HYDRA for an unspecified purpose.