The Beta unit is outfitted with support devices on the legs by default for better mobility, improving its movement speed compared to the Alpha unit. This modification comes from how slow the Alpha unit was, which was a price paid for the unit’s durable but extremely heavy armor. Like the Alpha unit, the Beta unit features the Iron Fist operators that favor strength.

The flexibility of the wrist joints have been improved, allowing the operators to be equipped with a wider range of weapons, from long-range cannons to close-combat gear. However, most customizations utilize smaller weapons such as machine guns and knives in order to avoid hindering the unit’s improved mobility.

Lumberjack is a variant model of Bulkarm Beta. Built solely with parts from MSG, it is clear that the model was designed for the purpose of disassembling target units. The unit wields a massive weapon known as “Slugger Blade.” The weapon’s blade is made out of a mysterious substance known as stelacrys.

The properties of this new material allow the weapon to reach a high temperature instantaneously. The weapon can only be utilized with the power of a HEXA G-R.A.M. but is extremely useful for destroying larger facilities. The sensor unit on the model’s head makes it more suited to close combat brawls than firefights.