A Hoplomachus (hoplon meaning "shield" in Greek) was a type of gladiator

Gladiator

A gladiator was an armed combatant who entertained audiences in the Roman Republic and Roman Empire in violent confrontations with other gladiators, wild animals, and condemned criminals. Some gladiators were volunteers who risked their legal and social standing and their lives by appearing in the...

 in ancient Rome

Ancient Rome

Ancient Rome was a thriving civilization that grew on the Italian Peninsula as early as the 8th century BC. Located along the Mediterranean Sea and centered on the city of Rome, it expanded to one of the largest empires in the ancient world....

, armed to resemble a Greek hoplite

Hoplite

A hoplite was a citizen-soldier of the Ancient Greek city-states. Hoplites were primarily armed as spearmen and fought in a phalanx formation. The word "hoplite" derives from "hoplon" , the type of the shield used by the soldiers, although, as a word, "hopla" could also denote weapons held or even...

 (soldier with heavy armor and helmet, a round shield, a spear and a sword). The hoplomachus would wear a bronze helmet, a manica on his right arm, loincloth (subligaculum

Subligaculum

A subligaculum was a kind of undergarment worn by ancient Romans. It could come either in the form of a pair of shorts, or in the form of a simple loincloth wrapped around the lower body. It could be worn both by men and women. In particular, it was part of the dress of gladiators, athletes, and of...

), heavy padding on his legs, and a pair of high greaves reaching to mid-thigh. His weapons were the spear and a short sword. He was often pitted against the murmillo

Murmillo

The murmillo was a type of gladiator during the Roman Imperial age. The murmillo-class gladiator was adopted in the early Imperial period to replace the earlier Gallus, named after the warriors of Gaul...

 (armed like a Roman soldier), perhaps as a re-enactment of Rome's wars in Greece and the Hellenistic East. The name hoplomachus means 'armored fighter'. The small, round shield was as much a weapon as a sword or spear, not unlike the original hoplites (who carried a larger shield), who used it primarily for defensive purposes, but also employed it in their charges, using it to ram their opponents at the onset of a fight.

His usual opponent was the murmillo

Murmillo

The murmillo was a type of gladiator during the Roman Imperial age. The murmillo-class gladiator was adopted in the early Imperial period to replace the earlier Gallus, named after the warriors of Gaul...

 but he might fight the thraex

Thraex

The Thraex , or Thracian, was a type of Roman gladiator, armed in the Thracian style with small rectangular shield called a parmula and a very short sword with a slightly curved blade called a sica , intended to maim an opponent's unarmoured back...

 in exceptional cases. Some experts believe that it was one of two designations of Samnite, and that Samnites were called hoplomachi when battling a Thracian

Thraex

The Thraex , or Thracian, was a type of Roman gladiator, armed in the Thracian style with small rectangular shield called a parmula and a very short sword with a slightly curved blade called a sica , intended to maim an opponent's unarmoured back...

, and a secutor when matched against retiarii.