What is the best Light Cone for Dr. Ratio?

I Venture Forth to Hunt is the closest fit on the data: it is a 5-star The Hunt Light Cone with 635 base ATK at level 80, and its passive acts on ATK. See You at the End is the best 4-star alternative.

Which relic set should Dr. Ratio use?

Hero of Triumphant Song. Its 2-piece bonus is: Increases ATK by 12%. Its 4-piece bonus is: While the wearer's memosprite is on the field, increases the wearer's SPD by 6%. When the wearer's memosprite attacks, increases the wearer's and memosprite's CRIT DMG by 30%, lasting for 2 turn(s).

Which Planar Ornament should Dr. Ratio use?

Firmament Frontline: Glamoth. Its 2-piece bonus is: Increases the wearer's ATK by 12%. When the wearer's SPD is equal to or higher than 135/160, the wearer deals 12%/18% more DMG. Planar Ornaments have no 4-piece bonus; the sphere and the rope are the whole set.

Dr. Ratio, Imaginary The Hunt character | Honkai: Star Rail

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Intelligentsia Guild

Dr. Ratio Build

Build guide · Honkai: Star Rail

ImaginaryThe HuntMain DPS

English voice: Jordan Paul Haro

The best Dr. Ratio build in Honkai: Star Rail (Version 4.6) is Baptism of Pure Thought with Pioneer Diver of Dead Waters. Updated November 5, 2026

Abilities Traces Materials Eidolons

Where these rankings come fromThe light cone order, relic sets and stat priorities on this tab are prydwen.gg’s, measured in play and rephrased. Relative damage figures are ratios against the bottom of each ranking, not absolute numbers, and each one holds only for the superimposition and team its row states. Everything else (base stats, passive text, material totals) is read from the game’s own data.

Light cones

5 ranked

Baptism of Pure Thought, 5★ The Hunt Light Cone | Honkai: Star Rail

BISBaptism of Pure Thought

116.12% at S1

582

Base ATK · lv 80

953 HP529 DEF

Worrisome, Blissful, 5★ The Hunt Light Cone | Honkai: Star Rail

#2Worrisome, Blissful

107.17% at S1

582

Base ATK · lv 80

1058 HP463 DEF

Only Silence Remains, 4★ The Hunt Light Cone | Honkai: Star Rail

#3Only Silence Remains

101.41% at S5

476

Base ATK · lv 80

953 HP331 DEF

Cruising in the Stellar Sea, 5★ The Hunt Light Cone | Honkai: Star Rail

#4Cruising in the Stellar Sea

100% at S5

529

Base ATK · lv 80

953 HP463 DEF

In the Night, 5★ The Hunt Light Cone | Honkai: Star Rail

#5In the Night

95.75% at S1

582

Base ATK · lv 80

1058 HP463 DEF

Relics

3 sets

CorePioneer Diver of Dead Waters

100% uptime | 3 Debuffs Required

2PCIncreases DMG dealt to enemies with debuffs by 12%.

4PCIncreases CRIT Rate by 4%. The wearer deals 8%/12% increased CRIT DMG to enemies with at least 2/3 debuffs. After the wearer inflicts a debuff on enemy targets, the aforementioned effects increase by 100%, lasting for 1 turn(s).

Also works

Planar ornaments

Sphere and rope · 2-piece only

CoreDuran, Dynasty of Running Wolves

Best planar option for Dr. Ratio due to all of his teams featuring a good amount of Follow-Up attack triggers.

2PCWhen an ally character uses a Follow-Up ATK, the wearer gains 1 stack of "Merit," stacking up to 5 time(s). Each stack of "Merit" increases the DMG dealt by the wearer's Follow-Up ATKs by 5%. When there are 5 stacks, additionally increases the wearer's CRIT DMG by 25%.

Also works

Main stats

Ultimate · 140 energy

Body: CRIT Rate >= CRIT DMG
Feet: Speed > ATK%
Planar Sphere: Imaginary DMG >= ATK%
Link Rope: ATK%

Substat priority

Highest first

1SPD (breakpoint)Best
2CRIT RATE = CRIT DMG
3ATK%

Reaching an acceptable Speed breakpoint for MoC and Pure Fiction while also hitting a high Crit Ratio is your top priority when searching for sub-stats. After achieving these goals ATK% can be searched for as a bonus.

Trace priority

Level in this order

#1
Talent
Max first
#2
Skill
Then
#3
Ultimate
Next
#4
Basic
Later

Major traces, best first: Summation (A2) > Deduction (A6) > Inference (A4)

Best Eidolons

E3 and E5 raise levels only

E1Pride Comes Before a Fall
E2The Divine Is in the Details
E3Level bump
E4Ignorance Is Blight
E5Level bump
E6Vincit Omnia Veritas

E1
Pride Comes Before a Fall
Game text
The maximum stackable count for the Trace "Summation" increases by 4. When a battle begins, immediately obtains 4 stacks of Summation. Needs to unlock Summation first.
E2
The Divine Is in the Details
Game text
When his Talent's Follow-Up ATK hits a target, for every debuff the target has, deals Imaginary Additional DMG equal to 20% of Dr. Ratio's ATK. This effect can be triggered for a maximum of 4 time(s) during each Follow-Up ATK.
E4
Ignorance Is Blight
Game text
When triggering the Talent, additionally regenerates 15 Energy for Dr. Ratio.
E6
Vincit Omnia Veritas
Game text
Additionally increases the trigger count for "Wiseman's Folly" by 1. The DMG dealt by the Talent's Follow-Up ATK increases by 50%.

Teams

1 team

Dr. Ratio team

Imaginary · The HuntLeads

Dr. Ratio follows up when the target carries enough debuffs, so the team is a follow-up partner, a buffer for it, and a sustain that debuffs on the side.

Dr. Ratio, this characterMain DPS
RobinFollow-up buffer
Topaz & NumbyFollow-up partner
AventurineSustain

All teams, with every replacement

Honkai: Star Rail 5★ Imaginary The Hunt Main DPS

Dr. Ratio build summary

Updated November 5, 2026

Baptism of Pure Thought tops the light cone ranking for Dr. Ratio, at 116.12% relative damage at S1, ahead of Worrisome, Blissful, Only Silence Remains and Cruising in the Stellar Sea. That order is prydwen.gg's, measured in play and rephrased here; every row of it sits under Light cones below.

Run Pioneer Diver of Dead Waters on Dr. Ratio, with Wastelander of Banditry Desert and The Ashblazing Grand Duke behind it. The planar ornament is Duran, Dynasty of Running Wolves. Main stats are CRIT Rate >= CRIT DMG body, Speed > ATK% feet, Imaginary DMG >= ATK% sphere, ATK% rope. Roll substats in the order SPD (breakpoint) > CRIT RATE = CRIT DMG > ATK%.

Trace priority is Talent > Skill > Ultimate > Basic. The Ultimate costs 140 energy, which is what an Energy Regeneration Rate target has to clear.

The strongest team is Dr. Ratio, Robin, Topaz & Numby and Aventurine, built around Dr. Ratio: Imaginary · The Hunt.

Role: Main DPS / Support
Best light cone: Baptism of Pure Thought
Alternatives: Worrisome, Blissful, Only Silence Remains, Cruising in the Stellar Sea
Relic set: Pioneer Diver of Dead Waters
Planar ornament: Duran, Dynasty of Running Wolves
Main stats: CRIT Rate >= CRIT DMG body, Speed > ATK% feet, Imaginary DMG >= ATK% sphere, ATK% rope
Substat priority: SPD (breakpoint) > CRIT RATE = CRIT DMG > ATK%
Trace priority: Talent > Skill > Ultimate > Basic
Best team: Dr. Ratio, Robin, Topaz & Numby, Aventurine
Ultimate energy cost: 140 energy
Key ascension material: 15× Conqueror's Will
Last updated: November 5, 2026

Dr. Ratio build FAQ

What is the best Light Cone for Dr. Ratio?: I Venture Forth to Hunt is the closest fit on the data: it is a 5-star The Hunt Light Cone with 635 base ATK at level 80, and its passive acts on ATK. See You at the End is the best 4-star alternative.
Which relic set should Dr. Ratio use?: Hero of Triumphant Song. Its 2-piece bonus is: Increases ATK by 12%. Its 4-piece bonus is: While the wearer's memosprite is on the field, increases the wearer's SPD by 6%. When the wearer's memosprite attacks, increases the wearer's and memosprite's CRIT DMG by 30%, lasting for 2 turn(s).
Which Planar Ornament should Dr. Ratio use?: Firmament Frontline: Glamoth. Its 2-piece bonus is: Increases the wearer's ATK by 12%. When the wearer's SPD is equal to or higher than 135/160, the wearer deals 12%/18% more DMG. Planar Ornaments have no 4-piece bonus; the sphere and the rope are the whole set.

Dr. Ratio Build

Light cones

Relics

Planar ornaments

Main stats

Substat priority

Trace priority

Best Eidolons

Pride Comes Before a Fall

The Divine Is in the Details

Ignorance Is Blight

Vincit Omnia Veritas

Teams

Dr. Ratio build FAQ