Zenless Zone Zero Starlight Billy: Signature W-Engine & Disc Guide

Rev up your damage with the ultimate Starlight Billy Build Guide for Zenless Zone Zero! Master this S-Rank Physical Rupture Agent's unique motorcycle combat style with the best W-Engines, Yunkui Tales Drive Discs, and high-performance teams featuring Lucia. Learn the optimal stat priorities and skill rotations to dominate New Eridu in 2026.

🏍️ Starlight Speedster: The Ultimate Billy Build Guide for Zenless Zone Zero ⚡

The neon-soaked streets of New Eridu have a new heavy hitter, and he’s bringing a motorcycle to a gunfight. Starlight Billy has officially rolled into Zenless Zone Zero as an S-Rank Physical Rupture Agent, blending flashy aesthetics with a high-pressure combat style. If you’re looking to turn this chrome-clad rider into a frontline powerhouse, this Guide breaks down the essential gear, stats, and squad synergies for the 2026 meta.

🛡️ Core Mechanics: The "Knight's Resolve" System

Starlight Billy is a high-risk, high-reward Main DPS who utilizes a dual-stance system. His gameplay revolves around managing his HP to fuel his massive Physical Sheer DMG.

• Bike Mode vs. Free Mode:

  • Bike Mode: Billy continuously consumes HP to gain a massive CRIT DMG boost and increased Anti-Interrupt. While in this mode, his skills generate [Heat]. At 100 Heat, his next EX Special Attack upgrades to a devastating finisher.

  • Free Mode: Triggered when HP drops below 1%, or can be manually managed. Certain skills in this mode restore HP, allowing him to stay in the fight.

• Sheer Force Scaling: His Core Passive, Knight's Resolve, converts his Max HP into Sheer Force. This means his Physical DMG ignores a significant portion of enemy DEF, making him an absolute tank-shredder.

• Survival Buffs: Activating specific moves grants a shield based on his Max HP, helping him stay aggressive even while his health is draining.

🛠️ Mechanical Mastery: Skill Upgrade Priority

Starlight Billy is a Main DPS who thrives on field time. To maximize his "Rupture" potential, you must prioritize his kit to reward consistent pressure.

1. Core Passive: The most vital upgrade. It governs his HP-to-Sheer Force conversion and his survivability shields.

2. Special Attack: His primary tool for entering Bike Mode and unleashing his upgraded EX Special.

3. Basic Attack: Essential for sustained field presence and generating shields.

4. Chain Attack: High impact, but secondary to his neutral game.

• Low Priority: Assist and Dodge. These provide utility but don't drive his primary damage engine.

⚙️ The Best W-Engines for Starlight Billy

To keep his offense rolling, Billy requires a W-Engine that supports smooth crit scaling and rewards his aggressive attack flow.

• Best-in-Slot: Signature W-Engine. Designed specifically for his HP-fluctuation mechanic, it provides CRIT Rate and buffs Sheer DMG when HP changes.

• Top A-Rank Option: Radiowave Journey. Available via the New Eridu City Fund, this grants stacks of Sheer Force upon using a Chain Attack or Ultimate.

• F2P Alternative: Puzzle Sphere. A solid budget pick that provides a 25.6% CRIT DMG boost and increases EX Special Attack damage by 32% when his HP is below 50%.

💿 Drive Disc Optimization: The Yunkui Setup

Building Billy’s Drive Discs is straightforward but requires balancing his crit stats to avoid "wasted" value.

• The 4-Piece Foundation: Yunkui Tales. This is the non-negotiable core for a Rupture-based Main DPS. It provides the necessary mechanical baseline for his physical output.

• The 2-Piece Choice:

  • Woodpecker Electro: Use this if you are struggling to hit your CRIT Rate thresholds.

  • Branch & Blade Song: The "Greedy" choice. Swap to this once your CRIT Rate is stable to push for maximum raw damage.

Main Stat Focus:

• Slot 4: CRIT Rate or CRIT DMG.

• Slot 5: Physical DMG% or HP% (since his Sheer Force scales with Max HP).

• Slot 6: HP% is mandatory to maximize his Core Passive scaling.

👥 Top Tier Squads: The Lucia Synergy

Starlight Billy performs best when supported by "Sheer" value buffs. Lucia is currently his most vital partner across all top-performing team compositions.

• The Balanced Trio: Billy + Lucia + Ju Fufu. The most forgiving lineup. This team offers smooth rotations and high stability.

• The High-Performance Comp: Billy + Lucia + Dialyn. For players with "fast hands." Dialyn rewards clean execution and frame-perfect rotations for a higher damage ceiling.

• The Unstoppable Force: Billy + Lucia + Caesar. Caesar provides the essential shielding needed to prevent Billy from being knocked out of his high-pressure damage windows, complementing his own internal shields.

💎 Fuel Your Starlight Journey

Starlight Billy anchors the early progression of the update, especially for players investing in new characters. Travelers aiming to accelerate ascension farming can explore trusted Zenless Zone Zero Accounts, optimize resin/stamina efficiency with expert Zenless Zone Zero Hourly Services, or secure consistent boss clears through reliable Zenless Zone Zero Boosting as farming rotations intensify.

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