Hawkeye hasn't been shy with connecting the show to the MCU's past, but Episode 4 goes a step further, directly connecting it to the post-credits scene from a previous movie by introducing a new character.
This article contains spoilers for Hawkeye Episode 4, 'Partners, Am I Right?' If you haven't seen the episode, turn back now!
The last time we saw Yelena was in the post-credits scene of the Black Widow movie.
Despite expecting Yelena to appear at some point, many may have been waiting for a very different cameo to pop up in this episode.