Behold the Devil!
For this custom of the original Grendel, Hunter Rose, I wanted to match the comic-book look as close as possible. It took me a while until I found the right parts in my fodder box.
Head : MU Spider-Man Future Foundation variant. Shaved the eyes, repaint, added wires for the stripes on the back of the head.
Torso, arms : MU Zemo
Hands : MU Moon Knight
Legs : MU Punisher (first release)
Feet : MU Ghost Rider
Weapon : wood stick and cuts from credit card for the blades
Rose : sculpted

I'm pretty satisfied of the result except the old Punisher legs do limit articulation and poseability.