It's nice to see you posting your MOCs here Chro
This is really intense! I'm loving the silhouette this piece creates; tall and slender yet still invoking power.
I gotta say, of all the things about this MOC that impresses me, the lower torso and cod piece really stood out. I really love how angled it is, creates a natural dynamic pose that seems very Anime-mecha-Evangelion looking. The reverse knees also help reduce the static pose and give the MOC more character, and it's a more creative decision over simply giving him chicken legs.
Also that Nocturn heads makes for a pretty awesome chest piece.
As far as critique is concerned, I kind of wish those Rahkshi heads came in that nice faded blue color because I feel like the dark blue kind of stands out and breaks the color scheme a bit and while I like the choice of the Rahkshi head on top, I also feel like it's a bit too small for this MOC (which is unfortunate since It's meant to be a Rahkshi)
But overall, very impressive.