Final answer:
The sculpture known as 'Spear-Bearer' is also called 'Doryphoros', a Roman marble copy of Greek sculptor Polykleitos's original bronze work.
Step-by-step explanation:
The sculpture Spear-Bearer is also known as Doryphoros, which is a Roman marble copy of a Greek bronze original created around 450 BCE. The original work was crafted by the Greek sculptor Polykleitos, and it represents his idea of the perfect male form, also known as "The Canon." This renowned statue, standing at a height of 211 cm, exhibited a strong contrapposto stance, which was a significant development from the previous rigid Archaic style. The figure was designed to embody the ideal warrior, complete with a shield and a spear, though these elements along with the original bronze have been lost. The Roman marble copy of Doryphoros can be found at the Archaeological Museum in Naples, Italy.