Avengers: Age of Ultron was packed full of all kinds of Easter eggs for fans to look out for, but there’s one that everyone seemed to miss until it was pointed out by Joss Whedon in the director’s commentary for the film.

The Easter egg is a nod to Whedon’s Buffy the Vampire Slayer spin-off series Angel. It was pointed out by Screen Crush, and it’s in the sequence where Thor is having a vision of Asgard. If you remember, there was a lot of crazy trippy imagery. It included three creepy looking figures wearing wolf, ram, and hart/stag masks. The site explains:

"On Angel, The Wolf, The Ram and The Hart were an ancient trio of true demons who, in present day Earth, are 'senior partners' at the Los Angeles law firm Wolfram & Hart. Through this organization, they enact their evil will, representing murderers and other demonic individuals."

I’ve gotta say, that’s a pretty clever inclusion that I don’t think I ever would have noticed. I’m happy that Whedon made sure to point it out to everyone!