Korrick is hot-tempered, quickly aroused to anger, though he is usually a "merrier sort", according to Aurora.
As a unicorn, he looks like a Budweiser[Footnote 2] horse, he is at least eighteen hands high, with a broad chest, four heavy hooves, forward-pricked ears, and a long equine face, but without an equine coat, having instead a smooth and slick-looking carapace, all chitinous scales and plates, varying from dark green to midnight black. The hooves are colven. One spiraling horn rises from its forehead, three feet long and wickedly pointed. The spirals are serrated on the edges, some of them covered with rust-brown stains and a pair of curling bighorn sheep horns are curved around the sides of his head. Seemingly eyeless, with leathery chitin where they should be, and his mane is made of rotted cobwebs.
In the seriesEdit
In Summer Knight, when Harry Dresden entered Aurora's suite at the Rothchild Hotel carrying Elaine Mallory, the Summer Emissary in his arms bleeding, Korrick threatened to attack Dresden saying that a Winterbound there couldn't be tolerated. Lord Talos stops him and gets him to back down. Aurora apologized to Dresden for his behavior. 
On the battlefield of the war between the Summer and Winter Courts, Aurora surrounds Dresden and team with Korrick, Talos, Lloyd Slate and some Summer warriors. Korrick has Lily, frozen in stature form, tied to his back. She is the current holder of the Summer Knight's Mantle and she's to be sacrificed on the Stone Table to upset the balance between the Summer and Winter courts. Aurora has him follow her to the Stone Table while the other stay behind to kill Dresden and team.