CSF-S3d Castel GT-II

Technology and Combat Characteristics
Using the combined combat data of the Harbinger and Arodnight, the LCR began development of a second model of the Castel Ground Type. The GT-IIs were given a much broader variety of weapons to use, most notably the missile launchers added on the skirts and shoulders, as well as modified 40mm Assault Rifles. Despite the notably high amount of firepower being placed on one machine, the LCR compensated for this due to the dwindling numbers of Castel Ground Types, and the thought of upgrading them all using the surplus of weapons was more logical than not. While the rest of the surplus weapons were converted into infantry operated turrets and silos, the ones attached to functioning Garrisai proved to be quite effective in boosting the unit's performance than the standard (poorly equipped) Castel Ground Types. The armor of the units were also enhanced with the steel plating recovered from fallen units, thus turning these once mass-produced Garrisai into defined war machines.

History
[From "Castel GT-II Elitist Division" Article]

In the battles shortly following Midnight Base, the gradually empowering LCR used the data gathered from their trio of ace units and finally improved the design of the Castel Ground Type. Also known as the “S3d”s, the Castel GT-IIs were a Limited Production Unit that shared many tech designs to the Arcandy Compact Frame. While being slightly inferior in reaction time and speed, their sustainability in battle due to the Dechalus core ensured that each one reached the highest level of performance no matter what.

With the amount of energy reserves being far over what the machine needed, sub-systems were a common sight on many of these GT-IIs. HMT II Thruster kits, guided targeting systems, and METACOM interfaced Weapons were only some of the tech integrated into these machines. along with this, by inheriting the CGT’s unmatched customizability, the GT-IIs were able to fulfill the role of any mission they needed to.

The addition of movable shoulder sub-joints allowed for the GT-II to both mount and fire any conventional weapon they had equipped. The mount also allowed them to detach the weapon, and use it in their main hands. This made the GT-II a very versatile machine when using multiple weapons at once. After initial designs were prototyped and fielded for the first time, the machines performed with an unmatched deadliness under the skills of their pilots. In time, though, many of these Limited Production Units would fall to the Mercury Legion or switch over to the Swords of the Maverick during Dom’s betrayal.

Trivia
- The GT-II isn't actually a new model of Garrisai, but instead a number of Castel GT-Is heavily modified for extensive use. While not being consistent from unit to unit, they were still reminiscent of the same design.

- They would eventually be standardized and refined in the form of the Castel GT-III.

- They have a similar origin story to the Landman Rodis of IBO.