The Murkblood tribe is a tribe of hostile Broken Draenei located in the Underbog and Nagrand. They are enemies of the Mag'har and the Kurenai.
They are led by Swamplord Musel'ek who rules from the Underbog in Coilfang Reservoir. Under Musel'ek's general, Ortor, the Murkblood sacked the Mag'har post of Sunspring, killing a thousand Mag'har, much of whom were civillians. The Murkblood then framed the Kurenai for the destruction of Sunspring.
The Murkbloods within Netherwing Ledge have been enslaved by the Dragonmaw Clan and are mining in the mines on Netherwing Ledge. They have made an alliance with the Netherwing dragonflight.