Ok, just my few little comments.
I feel like the blue wash is a little too much. They've come out looking a little too blue in my opinion. I would suggest going back and doing some Mythril Silver dry brushing on all the armor areas. Also, the red on the one termy's face seems awkward to me. I'm not sure what to say about it, other than to go with the silver on there.
The red and the washed blue just doesn't really feel like it goes well together. I think the mythril drybrushing will help with that, but I see red in the
GK scheme as more of an accent, rather than a main color. The loin cloth on the one, I'd rather see a brown or tan since it is cloth. If you want to leave it red, then you probably need to use some darker reds in the recesses to give it more depth.
I'd like to see some white on the shoulder guard. Most pictures you look at for
GK, this is a spot for heraldry, but the blank red is... well... blank? Perhaps doing half of it white will help the look there. Also, the parchments for the puyrity seals and books and such. It looks like you just did them skull white... do a light wash of devlin mud and that will give them more of a parchment look.
When I've been doing
GKs, I've left the handles of the halberds black and speckled them with some regal and ice blue, it gives a neat effect. The arm mounted weaponry, I've also usually done with a black casing. It's a more subtle look to me, but will still distinguish itself from the armor.
Just my two cents... take it or leave it. My biggest issue though is the blue of the armor...

Oh, and your basing is awesome, I love that.