The Sica was a long knife or short sword from Ancient Rome. To the Romans, it was a weapon associated with criminals, although it was also wielded by a class of gladiator known as the Thraex. It was the Special Weapon of the Gladiator.
Early Sicas had a sharply curved, single-sided blade, but the later design (the one shown in Deadliest Warrior) had a straight, double-edged blade with the upper third of the blade bent backwards at a 27° angle.
The Thracian Falx sword is believed to have been the inspiration for the Roman Sica, although the Sica is shorter.
The Sica's angled blade was designed to reach around the shields of opponents, which was necessary since the Thraex's typical opponent, the murmillo class of gladiator, carried the large scutum shield of Roman legionaries. With the tip pointing up, the Sica would often catch on the bottom of opponent's helmets, allowing the user to force the blade upwards through the jaw and into the brain. Spartacus used it a lot as a gladiator
Length: 18-25 inches
Weight: 2.5 pounds
Composition: Hardened steel