Why Tony Stark no longer needs the Arc Reactor Another major plot point of the ending of Iron Man 3 revolves around Tony's decision to have surgery to remove the shrapnel from his chest.

The closing scene of Iron Man 3 features Tony disposing of the most recent Arc Reactor, throwing it off the cliff where his house used to be. It's an incredibly symbolic moment, as he's letting go ...

Robert Downey Jr.’s Iron Man has not only been the face of the Marvel Cinematic Universe but has been its arc reactor-powered heart. From the self-centered yet brilliant billionaire in 2008’s ...

Bonus: +1 for the arc reactor, because if nothing else ... Tony Stark gets shirtless twice in Iron Man 3: briefly near the beginning of the movie after he spends the night with Maya, and for ...