Ive started working on the Household Guard of my Knight. The post isnt complete but i can drop a hint: Theyre basically Felinid Imperial Guard that were saved from destruction by being incorporated into the Freeblade house. They have naturally good night vision and are battle-hardened but few in number. They are basically tankers who use Sentinel walkers which due to not being under the scrutiny of the Admech have been heavily customized and individualistic to the driver. The average Sentinel is equipped with a grav-chute, multi-melta and power blade for melee attacks.