This content is copyright of CelebMix.com. Zoe Saldaña has become the highest-grossing actor in global box office history, a milestone secured by the December release of Avatar: Fire and Ash. The latest installment in James Cameron's sci fi saga has pushed Saldaña past every other performer, cementing her position at the top of an industry metric long dominated by blockbuster franchise stars. According to box office tallies from The Numbers, Saldaña's films have now earned a combined $15.47 billion worldwide.