Amazon's expanding fleet of robots includes: Hercules, a lifter capable of handling 1,250 pounds; Pegasus, which sorts packages on conveyor belts; and Proteus, the company's first fully autonomous robot able to operate directly alongside people.

Amazon will soon have as many robots as humans plugging away at its warehouses, the Wall Street Journal reports. And at this rate, it won't be long until the flesh and blood employees are downright outnumbered.

Amazon hits 1 million robots across 300 sites, boosting efficiency by 10%, as automation grows and human jobs in tech and logistics face mounting pressure.