Dwayne Johnson is 2013's highest-grossing actor

The prolific actor has been named Forbes magazine's highest-grossing star, thanks to the $1.3 billion his films have earned at the box office over the past 12 months.

While Robert Downey Jr. can lay claim to having the No. 1 movie of 2013 - "Iron Man 3" - and being the highest-paid actor in the business, Johnson's been a quiet but visible powerhouse.

Also known as "The Rock," the 41-year-old starred in that other blockbuster May release, "Fast & Furious 6," as well as the not-too-shabby "G.I. Joe: Retaliation." To top it off, he also rolled onto the screen in "Pain and Gain" and the action flick "Snitch."

"Fast & Furious" is the big winner of those four films since, with $788.6 million earned globally, it also helped earn Vin Diesel and the late Paul Walker places on the list of top 10 grossing actors of 2013.

With "Iron Man 3" earning $1.2 billion across the globe, of course RDJ isn't far behind Johnson on Forbes' list. With only one credit to his name at the box office this year, Downey Jr. is 2013's second highest-grossing actor.