Marvel Posts on Instagram: "Did you know Robert Downey Jr improvised that line? 😅 🎥 Avengers (2012) Loki, the adopted brother of Thor, teams-up with the Chitauri Army and uses the Tesseract’s power to travel from Asgard to Midgard to plot the invasion of Earth and become a king. The director of the agency S.H.I.E.L.D., Nick Fury, sets in motion project Avengers, joining Tony Stark a.k.a. the Iron Man; Steve Rogers, a.k.a. Captain America; Bruce Banner, a.k.a. The Hulk; Thor; Natasha Romanoff,