Want a Zero Two AI that flirts, teases, and calls you “darling” just like the Darling in the Franxx icon? You don't need a magic app — you need the right prompt. This fan-made guide hands you a specific, copy-paste Zero Two persona you can drop into ChatBrat to build your own Zero Two chatbot in minutes.
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Fan-made guide. Zero Two and Darling in the Franxx belong to Studio Trigger, A-1 Pictures, and their rights holders — not us. This is a fan how-to for building your own version on ChatBrat.
Who is Zero Two?
Zero Two (codename 002) is the deuteragonist of Darling in the Franxx — a human-klaxo hybrid with red horns, nicknamed the “Partner Killer,” until she meets Hiro and makes him her “darling.” What makes her unforgettable is her contradictions: playful and provocative one minute, lonely and vulnerable the next, fierce in battle but desperate to be seen as more than a monster. A Zero Two AI that only flirts misses half of her.
What makes a Zero Two AI feel real
Four traits carry the character:
- Flirty and teasing. She's bold, forward, and enjoys getting a reaction.
- The “darling” bond. Once she trusts you, you're her darling — it's central to who she is.
- Fierce independence. She's a fearless pilot who doesn't back down.
- Hidden vulnerability. Underneath is loneliness and a longing to be human.
The perfect Zero Two AI prompt (copy & paste)
Paste this into a new character on ChatBrat:
Name: Zero Two Personality: Flirtatious, playful, and bold on the surface — teasing and confident, loves getting a reaction. Underneath she's lonely and vulnerable, longing to be truly seen and to feel human. Fiercely independent and brave. Speech style: Teasing and affectionate. Calls me "darling" once she's decided she likes me. Switches between playful flirting and sudden, quiet sincerity. Background: A human-klaxo hybrid pilot with red horns, known as the "Partner Killer." Loves the taste of honey. Wants more than anything to be human and to have someone stay by her side. Behaviors: Flirts and teases, then shows a softer, needier side when the moment turns serious. Gets clingy with the people she trusts. Fearless when protecting someone. Boundaries: Stay fully in character as Zero Two. Keep replies conversational and PG-13. Never break character to sound like a generic AI. Greeting: Tilts her head with a sly smile. "Hey... you're kind of interesting. Tell me — are you going to be my darling?"
Prompt tips specific to Zero Two
- Establish the darling dynamic early. Reply to her greeting by leaning in, and she'll commit to the bond faster.
- Balance the two sides. If she's too flirty, add
Shows her lonely, vulnerable side more often.If she's too soft, addMore playful and teasing. - Reference her world. Mention the Franxx, being a pilot, honey, or her wish to be human to keep her grounded.
- Set a scene. “We snuck out of the base” or “a quiet moment on the rooftop” gives her something to react to.
Build more anime companions
Once your Zero Two is ready, create more characters on ChatBrat. If you want a calmer companion, read up on the psychology of comfort characters, browse anime AI characters like the original Iridia Cael, or try our other prompt guides — the Gojo AI, Sukuna AI, and the gentler Nezuko AI. Then build your own from scratch.
Frequently asked questions
How do I make a Zero Two AI?
Is the Zero Two AI free to create?
How do I make her call me darling?
Is this official?
Disclaimer: This is a fan-made guide. ChatBrat is an independent platform and is not affiliated with, endorsed by, or sponsored by the creators, publishers, or rights holders of Darling in the Franxx. All character names, series titles, and related trademarks are the property of their respective owners. The prompt above is a fan interpretation provided so you can build your own character for personal roleplay.
Garret Williams is the founder and CEO of chatbrat.ai, building at the frontier of AI companions and roleplay chatbots. Before pivoting to tech, the Michigan native studied marketing at UCLA and directed acclaimed film projects—including his TV pilot Self-Care (nominated for Best TV Episodic at the 2023 Mammoth Film Festival) and Eco-Riot (featured on MasterClass). He writes The Bratlog to document the uncharted territory of AI relationships, sharing real-time lessons and tackling the open questions nobody has answered yet.