Eous

Overview

Eous is a featured Bangboo in Zenless Zone Zero, serving as the essential partner and avatar for the protagonist siblings, Wise and Belle. Operating out of the video rental store Random Play, Eous plays a pivotal role in their secret work under the Proxy codename Phaethon. By establishing a sensory synchronization with either sibling, this small intelligent machine enters dangerous Hollows to guide agents and navigate hazardous zones, serving as the physical conduit for the legendary duo's operations.

Appearance

Eous is a small, general-purpose robot with a simple white and black color scheme and a physical design featuring rabbit-like ears. Around its neck, it wears a signature orange scarf marked with the number "01" alongside a small inscription of its name, "EOUS".

Personality

When not synchronized with its owners, Eous demonstrates a bright, cheerful, and energetic personality akin to a lively young boy. Although its natural vocalizations consist of encrypted sounds typical of Bangboos, translated communication reveals that it refers to itself by its own name or using modest male pronouns. Eous holds deep affection for the siblings Wise and Belle and frequently socializes with neighboring robots. While it can display a slight lack of confidence outside of work owing to its status as an older general-purpose model, it remains dedicated and shows a playful, relaxed side during quiet moments.

Abilities

Through the H.D.D. system, Eous synchronizes its senses with either Wise or Belle, allowing it to act as Phaethon's operational body inside Hollows while relaying the operator's voice. Its primary function is to guide hired agents along optimal paths through hazardous spatial anomalies. In addition to navigation, Eous provides light combat support by throwing smoke grenades to create distractions, and it is capable of conducting solo search-and-rescue missions within Hollows to retrieve missing individuals.

Background

Eous was passed down to the siblings Wise and Belle by their former mentor, alongside the core H.D.D. system. Residing at the Random Play video rental store in New Eridu, the robot operates with the siblings acting as both its owners and guardians. Because of the demanding nature of its field duties for the Proxy business Phaethon, Eous routinely spends its downtime recharging in a designated resting station in the shop's upper-floor bedroom. Alongside other unit variants residing at the store, it remains an integral component of the siblings' daily domestic life and underground operations.

Relationships

Eous maintains a close bond with its owners and guardians, the sibling duo Wise and Belle, who rely on it as an indispensable partner for their operations. It shares a domestic connection with sibling units of the same model line, including Bangboo 18 (Towa), who handles store promotion, Bangboo 06 (Rem), who guards the workshop entrance, and Bangboo 20 (Hatsu). The agent Alexandrina Sebastiane has observed Eous's deep devotion toward the siblings during their interactions. Additionally, the store's artificial intelligence, Fairy, categorizes Eous as its primary assistant within the workshop's organizational structure.

Trivia

The designation "Eous" is thought to derive from Greek mythology, named after one of the four horses that pulled the sun chariot driven by Phaethon. During operational pauses in Hollow exploration, Eous displays unique idle animations where it visibly slacks off or lounges around; because of the active sensory link, this behavior directly reflects the internal state of the synchronized Proxy operator becoming bored during long conversations.