Yes you read ! It is the site MDCU Comics who noticed this little wink, with the help of Joss Whedon obviously. The latter would have a small tribute to the Angel series in the film Avengers : Age of Ultron.

Remember, when the character of Thor a une vision d’Asgard, you can briefly see three characters in the shadow of the pillars. They wear masks representing well-known animals of the universe’Angel since it is the wolf, the ram and deer, meaning respectively Wolf, Ram, and Hart. You will immediately understood that this is a wink to Tungsten & Hart, the evil law firm, nemesis Angel and his friends in the 5 seasons.

Wolf Ram Hart Angel Avengers Age of Ultron

Wolfram Hart Angel

Source & image — via MDCU Comics