Soul of Steel

"A rending, splintering sound made them all look back at the house...then the window tore open completely, and out climbed Iorek Byrnison, the bear in armor.
Without it, he was formidable. With it, he was terrifying. It was rust-red, and crudely riveted together: great sheets and plates of dented discolored metal that scraped and screeched as they rode over one another. The helmet was pointed like his muzzle, with slits for eyes, and it left the lower part of his jaw bare for tearing and biting." -Philip Pullman "Armor" The Golden Compass