Lord Zeus
Lord Zeus is a living thundercloud homie born directly from Big Mom's soul who serves as her weather-controlling companion. He manifests to generate storms and lightning during her rampages across Sweet City and the Whole Cake Chateau while also carrying her during sea voyages. After repeated encounters with Nami he shifts allegiance and resides inside her Clima-tact as a servant providing thunder attacks.
Appearance
Lord Zeus appears as a massive cloud-like mass with a wide grin and round eyes that float beside Big Mom. His form swells larger and darker when filled with weather eggs turning into an enormous black thundercloud capable of discharging lightning across forests. He displays delighted wide eyes and musical notes while eating offered substances and extends a tongue with happy posture during feeding.12
Zeus transforms into a large black cloud when consuming objects and later adopts a thunder shark form with glowing eyes during attacks. He shows fearful expressions with bared teeth sweat drops and cowering posture when threatened by Big Mom or Hera. His body crackles with lightning effects while rushing forward under Nami's direction.34
Personality
Lord Zeus exhibits strong loyalty to Big Mom rooted in their soul bond yet displays greed that overrides caution when offered food. He refuses to let anyone but Big Mom ride him due to this connection and expresses delight while consuming black balls or thundercloud bait. His emotional conflict becomes visible when caught between loyalty to Big Mom and praise from Nami.56
Zeus apologizes repeatedly when scolded by Big Mom or Prometheus and begs for mercy when threatened with soul extinction. He prioritizes obtaining more food even during pursuits and later affirms his role as Nami's right hand man while requesting a name change. His fear of being discarded leads him to plead not to be killed after leaving Big Mom.78
Abilities and powers
Lord Zeus generates lightning and storms as Big Mom's thundercloud homie allowing her to control weather during rages. He carries Big Mom through the air toward ships and descends with her while summoned at sea. His body absorbs weather eggs to become a loaded thundercloud that discharges massive lightning blasts across areas when triggered by Nami.910
Zeus provides weather eggs to Nami and assists in battle by extending to fire blasts or zapping targets under her command. He changes into a thunder shark form to charge forward and produces rain when directed. His soul resides inside the Clima-tact after separation from Big Mom enabling combined sky science attacks.1112
History
Whole Cake Island
Lord Zeus first manifests beside Big Mom during her control of weather in the territory around Whole Cake Chateau. He rampages through Sweet City alongside Prometheus destroying parts of the city while Big Mom is enraged over the loss of Lord Cracker.1314
Zeus flies Big Mom toward unknown destinations and later eats black balls offered by Nami during the escape from the Seducing Woods. He shows conflict when Nami manipulates him with praise and bait preventing his return to Big Mom while she activates techniques against the crew.155
Wano Country and beyond
Relationships
Lord Zeus maintains a soul bond with Big Mom that prevents others from riding him and causes him to apologize when scolded by her or Prometheus. Big Mom threatens to extinguish his soul for defiance and later orders Hera to consume him after he fails to assist during a crisis.188
Zeus becomes Nami's servant after she lures him with food and offers continued black balls in exchange for service. He greets her happily upon joining her group and assists in her battles while she directs his lightning and storm attacks against opponents.198
Major battles
Lord Zeus engages in combat during the pursuit through the burning forest where Nami feeds him weather eggs to overload his form. He discharges lightning across the area after absorbing the bait turning his power against approaching threats. This allows the group to flee while Big Mom and her other homies close in from behind.20
Zeus joins Nami against Ulti and provides thunderbolt strikes while warning about the opponent's tough skin. He suggests a single focused attack will suffice and affirms his role in ensuring the strike lands successfully. During the exchange he requests a name change from Nami while preparing the assault.21
Zeus assists Nami and Usopp against a crowned monster by extending to fire blasts and zapping the target on command. He produces a large-scale storm attack labeled TEMPO while being struck during the exchange and crying out in pain amid the ongoing confrontation.2223
Zeus transforms into a thunder shark form with glowing eyes to charge forward during the confrontation involving Nami and a horned warrior. He responds to her summons and unleashes a massive attack labeled TEMPO while she directs the assault amid surrounding chaos and explosions.24