In Roman gladiatorial arenas, the Murmillo was the traditional opponent of the heavily-armed Hoplomachus. The Murmillo's gear differed only slightly from the Hoplomachus, a change more of style than of power. It seems fitting then that the Marian Hegemony's Murmillo BA would be similar to the Hoplomachus in size, but different in approach.

         The Murmillo looks almost like a small Mech, with its twin-gun arms, powerful body and shoulder rocket pack. It is the most modern of all the Marian BA's, but even so includes old Roman stylings; the head is shaped like the helm worn by the ancient Murmilli (including the traditional "fish" symbol) and the armor includes much molding and decoration.
         The Murmillo has the same weight of armor as the Hoplomachus, but doubles the other suit's ground speed. This makes the Murmillo more of an offensive weapon than the Hoplomachus.
         The Murmillo's arms are both fitted with basic manipulators. On the back of each arm is a twin gun mount, with an AP weapon mount on top of a small laser. A rocket launcher drum sits on the left shoulder, with a searchlight on the right for night fighting.

         The Marian Legions all but fell in love with the Murmillo. It is easily the most popular of all the Marian BattleArmor suits, and is deployed as a shock trooper, security unit, and other roles where the might of the Hegemony and such has become the symbol of the Emperor's power, however precarious it is. In the Circinus District though it has gained infamy from suppressive actions, and can be seen on propaganda posters as a symbol of their Caesar's Cirion's power.