From the announcement:
A skilled ’jack marshal and mechanik and a versatile fighter, Colbie Sterling is the captain of a small mercenary company known as the Black River Irregulars—a group with a reputation for getting things done even when it means putting themselves at risk. Sterling seeks the most lucrative contracts, with the goal of amassing enough wealth to transform the BRI into a truly formidable mercenary force.
The destruction of his kriel at the talons of Everblight’s legion set Horgle Ironstrike on a solitary path of fiery conflict. Though he has found a new sense of purpose in forging weapons for other kriels, he preserves his autonomy and refuses to put down roots. Horgle’s journeys draw him ever toward sites of bloodshed and mayhem as he seeks to unleash his simmering rage against all enemies of the trollkin race.
During her time tending the far-flung griffon roosts of the Circle, Una developed an unparalleled affinity with the winged beasts and now employs them to cut down opponents without mercy. Having refined her arcane command over the elements, she is able to call upon the howling gales and updrafts of the highest mountain peaks to shape the flow of battle.
Unique among his kind, Loki has managed to maintain a measure of both his sanity and his humanity even through the torturous transformation from man to warpwolf. His cunning combines with his imposing physical presence to make him a particularly terrifying beast of war. Fighting at Tanith’s side with shield and hooked blade in hand, he carves a bloody path through his opponents in battle, relishing the carnage.