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Honkai Star Rail Guide

Dr. Ratio Build Guide

The Hunt

Imaginary

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Dr. Ratio Overview

As a member of the Intelligentsia Guild, this individual possesses an eccentric temperament and a sharp-tongued nature, yet carries themselves with elegance. Behind the peculiar plaster head sculpture lies a surprisingly handsome face.

Dr. Ratio Stats at Lv. 80

hp
HP 1047
def
DEF 460
atk
ATK 776
spd
SPD 103
taunt
TAUNT 75

Dr. RatioAbilities

Mind is Might
Dr. Ratio Normal Attack
Single Target
Energy Regeneration 20
Weakness Break: 30

Level: 1

Deals Imaginary  DMG equal to 50% of Dr. Ratio’s ATK to a single enemy.

Dr. Ratio Abilities Priority

Dr_Ratio_Talent
Talent

Dr_Ratio_Ultimate
Ultiimate

Dr_Ratio_Skill
Skill

Dr_Ratio_baseATK
Normal Atk

Dr. Ratio Traces

Summation

First Tier

When Dr. Ratio uses his Skill, for every debuff on the target, his CRIT Rate increases by 2.5% and CRIT DMG by 5%. This effect can stack up to 6 time(s).

Second Tier (Ascension 2)

CRIT RATE +2.7%

Third Tier (Ascension 3)

ATK +4%

Inference

First Tier

When Skill is used to attack a target, there is a 100% base chance to reduce the attacked target enemy’s Effect RES by 10% for 2 turn(s).

Second Tier (Ascension 4)

ATK +6%

Third Tier (Ascension 5)

CRIT RATE +4%

Deduction

First Tier

When dealing DMG to a target that has 3 or more debuff(s), for each debuff the target has, the DMG dealt by Dr. Ratio to this target increases by 10%, up to a maximum increase of 50%.

Second Tier (Ascension 6)

DEF +7.5% 

Third Tier (Lv.75)

CRIT RATE +5.3%

Third Tier (Lv.80)

ATK +8%

Other Traces     

First Tier (Lv. 1)

ATK +4%

First Tier (Ascension 3)

DEF +5%

First Tier (Ascension 5)

ATK +6%

 Max Trace Lv Ascension Materials

credit_honkaistarrail.webp
3M
Thief's Instinct_honkailam_genshinlab
41
Usurper's Scheme_honkailam_genshinlab
56
Conqueror's Will_honkailam_genshinlab
58
Arrow of the Beast Hunter_honkailab_genshinlab
18
Arrow of the Demon Slayer_honkailab_genshinlab
69
Arrow of the Starchaser_honkailab_genshinlab
139
Past Grievances of the Planet-Boring Disaster
12
Tracks-of-Destiny.webp
8

Dr. Ratio Eidolon

Pride Comes Before a Fall

Dr. Ratio Eidolon Level 1

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.

The Divine Is in the Details

Dr. Ratio Eidolon Level 2

The SPD Boost effect of Dr Ratio’s Skill can stack up to 2 time(s).

Know Thyself

Dr. Ratio Eidolon Level 3

When triggering the Talent, additionally regenerates 15 Energy for Dr. Ratio.

Ignorance Is Blight

Dr. Ratio Eidolon Level 4

Dr Ratio regenerates 15 Energy when she defeats an enemy.

Sic Itur Ad Astra

Dr. Ratio Eidolon Level 5

Skill Lv. +2, up to a maximum of Lv. 15. Talent Lv. +2, up to a maximum of Lv. 15.

Vincit Omnia Veritas

Dr. Ratio Eidolon Level 6

Increases the trigger count for Wiseman’s Folly by 1. The DMG dealt by the Talent’s follow-up attack increases by 50%.

Dr. Ratio Key Eidolons

Dr_Ratio_Eidolon2
E2

Dr_Ratio_Eidolon4
E4

Dr_Ratio_Eidolon6
E6

Dr. Ratio Build, Best Light Cone & Best Relic

Dr. Ratio Main DPS LightCone

hp
HP 1058
def
DEF 529
atk
ATK 529
Light Cone Name
Baptism of Pure Thought
Rarity
Light Cone Type
The Hunt
How to Obtain
Light Cone Event Warp

Mental Training

Increases the wearer’s CRIT DMG by 20%/23%/26%/29%/32%. For every debuff on the enemy target, the wearer’s CRIT DMG dealt against them increases by 6%/7%/8%/9%/10%, up to a maximum of 3 stacks. When the wearer attacks the target with their Ultimate, the wearer receives the Disputation effect, increasing DMG dealt by 36%/42%/48%/54%/60% and their follow-up attacks ignore 20%/23%/26%/29%/32% of the target’s DEF. This effect lasts for 2 turns.

Dr. Ratio Main DPS Relics

Main Stats

Body
CRIT Rate/DMG
spd
ATK%
Sphere
Imaginary%
Rope
ATK%

Sub Stats

CRIT Rate/DMG➜ATK%➜SPD

Dr. Ratio Best Cavern Relics

 

Pioneer Diver of Dead Waters (4 Set)

2 Set Effect – Increases DMG dealt to enemies with debuff by 12%.

4 Set Effect – Increases 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).

Dr. Ratio Best Planar Ornament

Duran, Dynasty of Running Wolves (2 Set)

2 Set Effect – When allies use follow-up attacks, the wearer gains 1 stack of Merit, stacking up to 5 times. Each stack of Merit increases the DMG dealt by the wearer’s follow-up attacks by 5%. When there are 5 stacks, additionally increases the wearer’s CRIT DMG by 25%.

or

 

IInert Salsotto (2 Set)

2 Set Effect – Increases the wearer’s CRIT Rate by 8%. When the wearer’s current CRIT Rate reaches 50% or higher, the wearer’s Ultimate and follow-up attack DMG increases by 15%.

Dr. Ratio Team Comp

Dr. Ratio Premium Best Team

Dr. Ratio is a Main DPS in the team. Dr. Ratio DPS build is used

Dr. Ratio
Main DPS
Imaginary

Dr. Ratio leverages the abilities of his allies to apply debuffs to the enemies, thereby enhancing his own stats and damage.

Before using the Ultimate, prioritize targeting enemies who have 6 debuffs/Dot applied to them.

Robin
Support
Physical

Robin uses the ultimate to enter the “Concerto state”, and all allies immediately take action. During “Concerto state”, all allies’ ATK is increased based on Robin’s ATK. Following each attack by allies, Robin inflicts extra physical damage on a single target.

Topaz and Numby
DPS

Topaz uses her skill to increase the target damage received from follow-up attacks. And all attacks from Numby is regarded as follow-up attacks.

Aventurine
Tank
Imaginary

Aventurine’s skill provides the shield “Fortified Wager” to allies. “Blind Bet” points are gained by Aventurine when she or allies with the shield get hit, or when Aventurine uses her ultimate, or allies with the shield launch a follow-up attack. When “Blind Bet” reaches 7 points, Aventurine launches multiple follow-up attacks. 

Dr. Ratio Ascension Material

Overview of Dr. Ratio Ascension Materials

credit_honkaistarrail.webp
887K
Travelers-Guide.webp
290
Suppressing-Edict
65
Thiefs-Instinct.png
15
Usurpers-Scheme.png
15
Conquerors-Will.png
15
Rank
Req Lv
Credit
Mat#1
Mat#2
1
20
3200
Thiefs-Instinct.png
Thief’s Instinct x 5
2
30
6400
Thiefs-Instinct.png
Thief’s Instinct x 10
3
40
12800
Usurpers-Scheme.png
Usurper’s Scheme x 5
Suppressing-Edict
Suppressing Edict x 3
4
50
32000
Usurpers-Scheme.png
Usurper’s Scheme x 10
Suppressing-Edict
Suppressing Edict x 7
5
60
64000
Conquerors-Will.png
Conqueror’s Will x 6
Suppressing-Edict
Suppressing Edict x 20
6
70
128000
Conquerors-Will.png
Conqueror’s Will x 9
Suppressing-Edict
Suppressing Edict x 35