Tier B Physical Attack · W-Engine
Billy Best Weapon & Artifacts for 2026
⚡ Why This Build Works
Starlight Engine (R5) synergizes with Billy's kit because it provides the stats they need most. Combined with Hormone Punk (4pc) + Brawn (2pc), this build achieves the best balance of damage output and energy efficiency in the current meta. The main stat priority of CRIT Rate / ATK% / Physical DMG ensures Billy hits the right damage breakpoints while keeping their rotation smooth.
Build Tips & Optimization
Best Weapon for Billy in 2026
Starlight Engine (R5) is the best-in-slot weapon for Billy. This weapon maximizes their damage output by synergizing with Physical damage and their kit mechanics. It provides the optimal stat balance — whether that is ER for burst uptime, CRIT for raw damage, or EM for reaction teams.
F2P Weapon Option
Starlight Engine (R5) is a strong alternative that performs well without spending primogems on the weapon banner. It provides competitive damage especially at refinement 5. For budget players, this weapon lets Billy clear most content without sacrificing too much damage — the gap between Starlight Engine (R5) and Starlight Engine (R5) is usually manageable in endgame content.
Best Artifact Set for Billy in 2026
Hormone Punk (4pc) / Brawn (2pc) is the recommended set. This set provides the best balance of damage and utility for Billy in most team compositions. The 4-piece set bonus works directly with their kit to amplify damage, while the 2-piece bonus covers their stat requirements early on.
Stats Priority
- Substats: CRIT Rate > ATK% > Energy Regen
- Main Stats: CRIT Rate / ATK% / Physical DMG
Getting the right main stats is the most important step — a correct main stat with bad substats will always outperform the wrong main stat. Once your main stats are correct, focus on improving substat rolls to optimize Billy's damage further.
Build Variants
One character can fill multiple roles depending on weapon, artifact, and stat investment. These are the strongest Billy build directions for different content.
Ranged Physical DPS
Hormone Punk ramps ATK% after battle start, matching his sustained Basic damage. Starlight Engine is easy R5 and boosts Basics; The Brimstone is the upgrade.
Rotation Guide
Core Skill to enter aim mode -> Basic fire -> EX Special -> Ultimate.
Practicing this rotation is essential. Billy relies on proper ability ordering to snapshot buffs, maintain uptime, and maximize their damage window. Watch your energy gauge and swap back to supports before Billy's buff window expires.
Common Mistakes When Building This Character
- Using wrong main stat on artifacts — stat priority beats set bonus in most cases.
- Ignoring Energy Recharge requirements — not enough ER breaks the rotation.
- Copying whale builds — most guides assume 5-star weapons and high constellations.
- Over-investing in ATK when the character scales with HP, DEF, or EM instead.
- Not leveling the right talents first — some talent upgrades are trap investments.
- Neglecting the team — Billy performs best in Billy + Anby + Nicole., so build around their support needs.
Frequently Asked Questions
What is the best weapon for Billy?
The best-in-slot weapon for Billy is Starlight Engine (R5). It synergizes with their Physical kit by providing the exact stats they need. For players who don't have it, Starlight Engine (R5) is the strongest free-to-play alternative and performs well even at refinement 1.
What artifact set should I use on Billy?
Hormone Punk (4pc) + Brawn (2pc) is the recommended set for Billy. This set maximizes their damage output by working with their kit mechanics. The main stats to prioritize are: CRIT Rate / ATK% / Physical DMG. Substats should follow this priority: CRIT Rate > ATK% > Energy Regen.
What is the optimal rotation for Billy?
The optimal Billy rotation is: Core Skill to enter aim mode -> Basic fire -> EX Special -> Ultimate.. Timing is key — make sure supports cast their abilities first so Billy can snapshot buffs and maximize their damage window.
Is Billy worth building in the current meta?
Billy is rated 7/10 and works as a physical attack. They fit into Billy + Anby + Nicole.. Even at moderate investment they perform well in current abyss rotations.