Zero Two

Zero Two (ゼロツー) is one of the main characters and the female lead of Darling in the FranXX.

She is a mysterious, powerful, and rebellious pilot with striking appearance: long pink hair (sometimes appearing more horn-pink or coral), bright teal eyes, and most notably, small red oni-like horns protruding from her head. These horns mark her as a hybrid — part human and part Klaxosaur (the monstrous enemies in the series).

Personality-wise, Zero Two is:

• Playful, teasing, and often provocative
• Extremely blunt and unfiltered in her speech
• Childlike in some ways (loves sweets, has a very direct way of expressing affection)
• But also carries deep trauma, loneliness, and a ruthless side when fighting
• Famously calls her partner "Darling" (in a very signature, drawn-out way)

She's an elite pilot who can only sync effectively with a specific partner due to her unique physiology, and her partnership with Hiro becomes the central emotional focus of the story.

In short: pink-haired, horned, dangerous, sweet-toothed, fiercely independent, and deeply emotionally complex cyborg-like girl who says "Darling~" a lot.