Bulkarm λ (Lambda) is the generic name for the 2nd generation high performance production model Hexa Gear developed by MSG. These units were mostly deployed in the Valiant Force non-para-pawn squad, and they saw action as weapons provided to Heterodox in partnership with MSG.

However, the Jackal in this article has been heavily specialized to better suit urban conflict, with the Heterodox that took provision of the unit using it as a show of force in internal struggles and as a peace keeper with residents and rebels in their areas of control.

The reasons why this unit was developed on the base of the Bulkarms series, despite it showing its age compared to the 3rd generation Hexa Gears, includes its armored and sealed cockpit ideal for long watches, its marching speed, and its ease of maintenance making its introduction and operation easy for groups unaccustomed to working with newer 3rd generation Hexa Gears

The Bulkarm series is perhaps most-loved among the Hexa Gear series for its brutish form, large selection of variation units, and, more than anything, for being humanoid mechs. Now a completely new generation of Bulkarm joins the battle!

This new unit maintains the entirely sealed cockpit and four humanoid limbs of standard Bulkarms, but has been significantly updated for deployment in urban areas, including compact equipment and an increase in mobility and optional parts. Users can enjoy customizing units based on this model to form their own unique squad.