A crime lord and notorious nightclub owner from Planet Two of the Shadow Multiverse, Killa Harkan emerged as a formidable figure in the galactic underworld. Alongside Caine, John Wick, and Eve Macarro—three other ruthless hitmen—he formed an alliance against common foes; other local and international criminals. Though not officially part of ISG, their unity makes them potential allies to the supergroups during conflicts with rival criminal factions. Harkan’s clubs are infamous for interdimensional brawls where guests can bet on fights spilling across realities—or witness exotic species battling each other for amusement (and profit). His network extends beyond just entertainment though—as he secretly trades intelligence and weapons with ISG.