Goblin

Goblins are Winter Court fae. They were among Mab's troops in Summer Knight.

Description
Goblins are considered the foot soldiers of the Winter Court.

Harry Dresden describes them as lantern-jawed, burly humanoids with wide, batlike ears.

Dresden describes them as vaguely humanoids and being vaguely similar, but all different. They had gleaming red eyes and had the overall look of an evil gang. They were tall and emaciated, some squat, some muscular, some medium-sized and every combination in between. Some had huge ears, or no ears, or odd shaggy chins, and all had asymmetrical features. Their similarity was in mismatchedness; each body in "aesthetic war with itself".

Their garb consisted of cloth and leather armor, all bearing geometric inscribed shapes, all mostly variation of black. Their arms were: knives, swords, axes, and even crueler implements of battle.

They bleed a greenish blood.

Summer Knight
In Summer Knight, in the war between Summer and Winter Courts, Harry Dresden led his group of werewolves and changelings around the battlefield, in an attempt to stop Maeve at the Stone Table. Among the Winter troops behind Winter's battle lines, were battered goblins dragging their dead and some of their wounded onto the carrion pile that Sylphs were scavenging through. Dresden rescued a group of goblins from a pack of giant bees with a fire blast that killed one bee and sent the rest retreating. Then a goup attacked the traitor Lloyd Slate on horseback and Dresden witnessed him slaughter a Goblin.

Proven Guilty
In Proven Guilty, when entering Arctis Tor, Harry Dresden and team encounter numerous dead bodies of goblins and trolls entering the fortress. They were all burned with Hellfire. Later in the series, Dresden learned that it was the Denarian, Thorned Namshiel, that used Hellfire at Arctis Tor was.

Changes
In Changes, Harry Dresden and Susan Rodriguez escape the Eebs through a way into the Erlking's great dining hall. They're surrounded by goblins and pursued by the Eebs with their vampires and the Ik'k'uox close behind. Erlking considers what to do with all of them. Lord Ordulaka suggests that the Erlking render blood judgement on the intruders. Rafforut, slender and five feet tall, suggests that the Erlking call a trial by blood (combat). And so the Erlking makes Dresden and Rodriguez fight a vamp and the Ik'k'uox.

Cold Days
In Cold Days, goblins are among the Winter Court faeries that sing Happy Birthday to Harry Dresden.