Dr. Ratio Build Guide
Best relics, light cones, team compositions & trace priority for Honkai Star Rail 4.0 (February 2026)
📖 Dr. Ratio Overview
Dr. Ratio is a free 5-star Imaginary Hunt DPS who deals bonus Follow-Up Attacks to debuffed enemies. Stronger with more debuffs on the target.
Element
Imaginary
Path
Hunt
Rarity
★★★★★
Tier
A
⚔️ Skills Breakdown
Basic Attack
Deals Imaginary DMG to a single enemy.
Skill
Deals Imaginary DMG with enhanced effects based on Dr. Ratio's kit.
Ultimate
Powerful Imaginary DMG ability with special effects.
Talent
Passive ability enhancing Dr. Ratio's combat effectiveness.
Technique
Overworld ability providing combat advantages.
🛡️ Best Relics & Planar Ornaments
Relic Sets
🏆 Best in Slot
Pioneer Diver of Dead Waters (4pc)
Alternatives
The Ashblazing Grand Duke (4pc)
Planar Ornaments
🏆 Best in Slot
Duran Dynasty of Running Wolves
Alternatives
Rutilant Arena
🔮 Best Light Cones
🏆 Best in Slot
Baptism of Pure Thought (Signature)
Alternatives (ranked)
Swordplay (4★), Cruising in the Stellar Sea
📊 Stat Priority & Main Stats
Body
CRIT Rate / CRIT DMG
Feet
SPD
Sphere
Imaginary DMG
Rope
ATK%
Sub-stat Priority
CRIT Rate > CRIT DMG > ATK% > SPD
Target Stats
75%+ CRIT Rate
👥 Best Team Compositions
🏆 Optimal Teams
Team 1
Team 2
Alternative Teams
📈 Trace & Eidolon Priority
Trace Upgrade Order
Skill > Talent > Ultimate > Basic Attack
Eidolon Priority
E1 > E2
✅ Pros & Cons
✅ Pros
Free 5-star
Strong with debuffed enemies
Good FuA synergy
❌ Cons
Needs debuffs on target
Outdated vs Feixiao
💡 Tips & Tricks
More debuffs on enemy = more Follow-Up Attacks.
Aventurine Unnerved counts as debuff.
❓ Frequently Asked Questions
What are the best relics for Dr. Ratio?
The best relic set is Pioneer Diver of Dead Waters (4pc) paired with Duran Dynasty of Running Wolves as the planar ornament. Alternatives include The Ashblazing Grand Duke (4pc).
What is the best Light Cone for Dr. Ratio?
The best Light Cone is Baptism of Pure Thought (Signature). Good alternatives include: Swordplay (4★), Cruising in the Stellar Sea.
What tier is Dr. Ratio in HSR 4.0?
Dr. Ratio is ranked A Tier in our Honkai Star Rail 4.0 tier list as of February 2026.
Is Dr. Ratio worth pulling?
As a A Tier Main DPS, Dr. Ratio is a solid option but consider higher-tier alternatives first.