Zero Two's horns grow as a distinct physiological side effect directly linked to her aggressive piloting of the FRANXX unit, Strelizia. This intense combat activity triggers significant physical transformations within her.
The Process of Horn Growth
Her unique biology, characteristic of a "Klaxosaur Princess" or "Parasite," reacts profoundly to the strenuous demands and immense power exerted while she operates Strelizia. The more she engages in aggressive combat piloting, the more rapidly and prominently her horns develop. This accelerated growth is a direct consequence of her deep synchronization and combat style with the specialized mecha.
Accompanying Physiological Changes
The growth of Zero Two's horns is not an isolated phenomenon but is part of a broader set of physical alterations that manifest due to her demanding role as a pilot. These changes underscore the inherent connection between her abilities and her physical form, persisting even when she wears her limiter headband, which is designed to suppress such outward transformations.
The key physiological effects include:
- Rapid Horn Development: Her distinctive horns experience an alarming rate of growth.
- Enhanced Fang Elongation: Her fangs also lengthen and become more pronounced.
- Eye Coloration Shift: Her eyes frequently glow a vivid red, particularly when she is angered or experiences heightened emotional states during combat.
These transformations collectively highlight the intense symbiotic relationship Zero Two shares with Strelizia and the profound impact of her aggressive piloting style on her unique biology.
