Iron crab

Iron crab - Monster from the book "The Lord of the Ice Garden" by Jarosław Grzędowicz. Created with magic by one of the main antagonists, Pier Van Dyken. These creatures served in the army of the Serpent People.

"[...] eight strange creatures. These will probably be the crabs that everyone is talking about. Strange traces, like humans, but narrow and long. And these blades ... everything cut all around. As if they were waving them mindlessly. Narrow long blades. Very sharp."

"This is one of those so-called crabs. Indeed, covered in armor, I cannot see the blades. It is small, would reach a tall man's chest, but stocky. He walks strangely, somehow, as if the headless torso alone. It looks more like a deep-sea fish on legs than a crab. "

"The crab suddenly showed arms with crooked blades, which until then had been tightly entwined on a barrel-shaped chest [...]
However, this armor looks fake. Like tacky rusty metal armor, however fancy shape. "

"Weird creatures were marching a meter from him, crunching with loose metal sheets. They had almost no heads, only a flat bulge with something like a wide beak at the front and a narrow slit above the beak. It was like a 16th century "frog's face" tournament helmet."

"The sheet metal was full of pitting and resembled polished rust "

"[...] he managed to tilt the helmet slightly. Inside, under the metal sheets, he could see something fleshy like the body of a mussel [...]"
~ The Lord of the Ice Garden, vol. I
*self-translation