Kalifa is a prominent character in the One Piece series, known for her role as an antagonist during the Enies Lobby Arc. She is a former member of CP9, the World Government's secret intelligence agency, and serves as one of its elite assassins. Kalifa is initially introduced as the secretary to Iceberg, the mayor of Water 7. Still, it is later revealed that she is an undercover agent working to retrieve the blueprints of the ancient weapon Pluton.

Appearance and Personality

Credits: One Piece Quora

Kalifa itypically wears long, blonde hair in a stylish updo, with her bangs framing her face. Kalifa often wears glasses, which add to her sharp and intellectual appearance. Her standard attire as Iceburg's secretary includes a tailored black suit with a white shirt. Her outfit becomes more combat-oriented when she reveals her true identity as a CP9 agent, featuring a revealing black leather bodysuit that emphasizes her agility and combat prowess.

Kalifa is known for her cold, calculating personality and her unwavering dedication to her missions. As a CP9 agent, she is highly disciplined and focused and takes her duties very seriously. Kalifa is meticulous in her work, whether as Iceburg's secretary or as an assassin, always ensuring that every detail is perfect. Despite her professional demeanor, Kalifa has a condescending attitude and often looks down on others, particularly those she considers inferior or weak.

Powers and Abilities

• Awa Awa no Mi (Bubble-Bubble Fruit): Kalifa’s primary ability comes from the Awa Awa no Mi, a Paramecia-type Devil Fruit that grants her the power to produce and control soap bubbles. These bubbles are not ordinary; they can "clean" anything they touch, including draining a person’s strength and leaving them physically weakened. The bubbles can also make surfaces, including human skin, extremely slippery, which Kalifa uses to immobilize and incapacitate her opponents. This ability is particularly effective in combat, allowing her to neutralize enemies without causing direct harm.
• Rokushiki Mastery: As a former member of CP9, Kalifa is highly skilled in the Rokushiki martial arts, a set of six powerful techniques used by elite members of the World Government. Her proficiency in these techniques makes her a formidable fighter, capable of both offense and defense:   
• Use of Bubbles in Combat: Kalifa creatively uses her Devil Fruit powers in combat, not just to weaken enemies but also to create obstacles, such as slippery floors, that hinder her opponents' movements and give her a strategic advantage. 

Trivia

• Kalifa is the only female member of CP9.
• Her obsession with cleanliness is reflected in her Devil Fruit power, the Awa Awa no Mi, which allows her to "clean" her enemies by draining their strength.
• Kalifa’s name is likely derived from "Caliph," a title used by Islamic rulers, which could hint at her authoritative and commanding presence.
• Her role as Iceburg’s secretary allowed her to gather critical information for CP9
• Kalifa is among the few characters in the series to have mastered all six Rokushiki techniques, a testament to her skill and dedication as a CP9 agent.