Thor. Iron Man 3 was the first film I saw in the theater.

First saw Iron Man, was hooked with The Avengers

I have this way of semi-watching the movies by reading the plot on various sides, watching the important scenes, breakdowns of the movie, that I essentially watched the movie. As a kid I liked Spider-Man and the Avengers and Guardians because of those DisneyXD series, and I knew those movies existed thanks to the LEGO sets, but Avengers Infinity War was the period I knew about this connected universe and started to explore. Star Wars Rebels, my childhood, was just finished, and the hype of Infinity War really lift up so much that I decided to do my research, and at the time of the summer I was a MCU nerd. But the first Marvel movie I entirely watched was Spider-Man: Far From Home, but because of the research I did I knew everything that happened before and also the events of Endgame...

Thor

Well actually guardians of the galaxy now that I think about it

Avengers age of Ultron

I saw Iron Man in theaters.

Haha old (jk I’m joking that’s cool)

For me it was Iron Man, but the first one I saw in the theatre was Thor: The Dark World.

For me, it started at the beginning: with Iron Man.

Avengers