Drakken Joe, known as the "Dark Alchemist" and "Undead Joe," emerged from a planet where humans were bred as test subjects with a 15-year lifespan. Driven by childhood dreams of longevity and friendship, he uncovered alchemy through the Alchemist Ether Gear. This power let him siphon others' life force into his own via a life-support device, extending his life for centuries. His noble quest twisted into greed and a fixation on survival, earning him the "DJ Zombie" alias during his time on Norma.
By X432, operating as "DJ Zombie" on Norma, Drakken indirectly caused many deaths over a decade, including Weisz Steiner’s mother. As a fixer for local gangs, he punished a young Weisz for theft by amputating his right arm after Weisz stole money tied to him—an act that pushed Weisz away from crime. Drakken later relocated to Guilst, molding it into a lawless hub via his syndicate. His planetary-scale threats secured him a spot in the Oración Seis Galáctica by X492.
Greed and violence define Drakken, who prizes money above all. He ruthlessly extorts debtors as a loan shark, using torture or forced labor while sparing lives to exploit humans as assets. Yet he reacts savagely to threats against his reputation, like ordering hacker Spider’s execution for tarnishing his name. His sadism surfaces in acts such as laughing during Weisz’s amputation. Flashbacks reveal a kinder youth warped by isolation and desperation for longevity into a being obsessed with self-preservation and control.
Physically, Drakken is tall and muscular, with dark red spiky hair, a curled beard, and a diamond-shaped pendant. He dons a fur-collared overcoat over a white high-collared jacket and violet turtleneck. After Hermit reverses his life-support during defeat, he ages rapidly into a shriveled, frail elder with light hair and wrinkled skin. When his life-support fuses with his Ether, he mutates into a monstrous, bat-like entity with multiple limbs, shapeshifting abilities, and lightning attacks.
His Alchemist Ether Gear transmutes matter—converting objects to other materials or gases, imbuing weapons with these traits, firing petrification rays, and altering his body for offense or defense. As Oración Seis Galáctica, he activates Overdrive, boosting Ether powers and morphing his physiology into a crystalline form with a reptilian tail. His longevity hinges on stolen life forces, a dependency that becomes his downfall when reversed.
In the Belial Gore arc, Drakken hunts the Edens Zero crew to capture Rebecca Bluegarden, dubbed "No. 29" for her time-leaping. He traps them aboard his fortress, re-amputates Weisz’s arm, and kills Shiki Granbell. After Rebecca’s Cat Leaper rewinds time to World No. 30, he battles the crew again but loses when Shiki achieves true Overdrive. Hermit’s sabotage of his life-support triggers rapid aging and mutation. Weisz spares him, leading to arrest and syndicate collapse. His aged form later fails to drain Weisz’s youth due to weakness, and he dies of old age in custody.
In Universe 0, Drakken sustains longevity by absorbing animal life forces instead of humans and co-manages Belial Gore with Nero. Shocked by his past selves’ atrocities, he adopts a subdued, benevolent demeanor, using operations to aid others despite some collateral harm. This shift lets Shiki embrace him as a friend.