Combat Frame Data: SCF-001 +Seed Castellan

SCF-001 +Seed Castellan
SCF-001 +Seed Castellan

Technical Data

Model number: SCF-001
Code name: +Seed Castellan
Nickname: Mitzi
Classification: Multipurpose transforming combat frame
Manufacturer: PAX, in collaboration with the Saeculum
Operator: PAX
First deployment: CY 98
Crew: 1 pilot in right chest cockpit, 1 Witness in left chest A.I. bay
Height: 19.5 meters
Weight: dry weight 97 metric tons, full weight 155 metric tons
Armor type: “1D” carbyne laminar armor; claymore reactive armor on chest
Powerplant: cold fusion reactor, max output 2950 KW
Propulsion: rocket thrusters: 4x 41,790 kg, 4x 20,910 kg, 2x 12,000 kg; top speed 2500 kph; maneuvering thrusters: 33, 180° turn time 0.97 seconds; legs: top ground speed 155 kph; treads: top ground speed 100 kph
Sensors: radar, thermal, optical, gravitic array; main cameras mounted in chest
Fixed armaments: x35 micro-missile launcher, built into chest; x2 ballistic missile launcher, back-mounted; x36 frag launcher, chest-mounted, loads tungsten-graphene ball bearings
Optional hand armaments: plasma sword, output rated at 0.87 MW; 4-barrel plasma cannon, output rated at 3.6 MW; carbyne shield, mounts x78 tungsten-graphene frag launcher, attaches to left arm
Special Equipment: Full-immersion cockpit, Witness A.I. co-pilot

General Notes

A joint project between the covert PAX organization and the reclusive Saeculum Order, the SCF-001 featured a number of innovations that made it one of the most advanced combat frames in service as of CY 98.

The impetus for designing the SCF-001 was originally to accommodate a disabled pilot. To that end, the unit incorporates a full-immersion cockpit derived from Ynzu technology. The nanite-laden fluid filling the cockpit not only enabled direct mental control of the CF, it served as a fail safe to back up the pilot's memory engrams within the onboard computer.

Making contact with the Saeculum added a new dimension to the SCF-001's design process. The Order had established a vast index of historical figures' memories. Copying one of these Witnesses to the unit's systems provided a co-pilot with a wealth of knowledge and experience. The placement of the A.I. core across from the full-immersion cockpit, and the CF's cruciform shape, gave rise to the code name +Seed (pronounced "Cross Seed").

In terms of hardware, the +Seed Castellan was built on the same frame as the One Series XSeed prototype. Its external structure was greatly streamlined, including the replacement of the head with a bank of missile tubes. The SCF-001 also borrowed inspiration from the XCD-103 Eisenpferd by integrating missile launchers into its shoulders and backpack. Like XSeed-class combat frames, the +Seed sported carbyne laminar armor across its outer surface. A chest-mounted bank of frag launchers filled with graphene-coated tungsten balls further boosted the unit's defense by serving as reactive armor. These launchers could also be used offensively against grappled foes.

The +Seed's hand armaments included a large plasma sword patterned after the YCC-013-1 Jagannath. In another nod to Kazoku war-era equipment, the SCF-001 also carried a quad plasma cannon based on the XSeed Kreuzgun's signature weapon. A carbyne shield mounting a cross-shaped bank of frag launchers completed its loadout and further bolstered its defenses.

Like the XCD-102 Emancipator, the +Seed featured a transformation system. The SCF-001 could switch from CF mode to tank mode in order to lower its profile and gain ground maneuverability.

Combat Frame XSeed


  1. Turns into a tank.
    Mounts a bank of claymores as a CDW.
    I want one!

  2. Brian
    Cool mech but what are the dangers if using Ynzu technology?
    Saeculum and witnesses. Hmmm where have I come across them before? :)