Honkai Star Rail Guide

Dr. Ratio Build Guide

S Tier 

 The Hunt

 imaginary

Dr. Ratio Stats at Max Lv

hp.webp
HP1047
def.webp
DEF 460
atk.webp
ATK 776
spd.webp
SPD 105
taunt.webp
TAUNT 75

Dr. Ratio Story

As a member of the Intelligentsia Guild, this individual exhibits an eccentric temperament and a sharp-tongued disposition, but maintains an elegant demeanor. Despite their peculiar plaster head sculpture, they conceal a surprisingly handsome face beneath it.

Dr. Ratio Max Lv Ascension Materials

credit_honkaistarrail.webp
887K
Travelers-Guide.webp
290
Netherworld-Pass.png
65
Thiefs-Instinct.png
15
Usurpers-Scheme
15
Conquerors-Will
15

Dr. Ratio Skills

Dr. Ratio Abilities Priority

Dr_Ratio_Talent.webp
Talent

Dr_Ratio_Ultimate.webp
Ultiimate

Dr_Ratio_Skill.webp
Skill

Dr_Ratio_baseATK.webp
Normal Atk

Mind is Might

Dr. Ratio Normal Attack

 

Single Target
Level: 1

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

Intellectual Midwifery

Dr. Ratio Skill

 

Single Target

Level: 1
Deals Imaginary DMG equal to 75% of Dr. Ratio’s ATK to a single target enemy.

Syllogistic Paradox

Dr. Ratio Ultimate

 

Single Target
Energy Cost: 140

Level: 1
Deals Imaginary DMG equal to 144% of Dr. Ratio’s ATK to a single enemy target and applies Wiseman’s Folly. When Dr. Ratio’s allies attack targets afflicted with Wiseman’s Folly, Dr. Ratio launches his Talent’s follow-up attack once against this target. Wiseman’s Folly can be triggered up to 2 times and only affects the most recent target of Dr. Ratio’s Ultimate. After using Dr. Ratio’s Ultimate, the trigger count resets.

Dr. Ratio Talents

Cogito, Ergo Sum

Dr. Ratio Talent

 

Level: 1

Deals Imaginary DMG equal to 144% of Dr. Ratio’s ATK to a single target enemy and applies Wiseman’s Folly. When Dr. Ratio’s allies attack a target afflicted with Wiseman’s Folly, Dr. Ratio launches his Talent’s follow-up attack for 1 time against this target.
Wiseman’s Folly can be triggered for up to 2 times and only affects the most recent target of Dr. Ratio’s Ultimate. This trigger count resets after Dr. Ratio’s Ultimate is used.

Dr. Ratio Technique

Mold of Idolatry

Dr. Ratio Technique

 

Impair

After using Technique, creates a special dimension that Taunts nearby enemies, lasting 10 second(s). After entering battle with enemies in the dimension, there is a 100% base chance to inflict 15% SPD Reduction on enemies for 2 turn(s). Only 1 dimension created by allies can exist at the same time.

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
Thiefs-Instinct.png
41
Usurpers-Scheme
56
Conquerors-Will.png
58
Arrow-of-the-Beast-Hunter_honkailab_genshinlab.webp
18
Arrow-of-the-Demon-Slayer_honkailab_genshinlab.webp
69
Arrow-of-the-Starchaser_honkailab_genshinlab.webp
139
Tracks-of-Destiny.webp
8
Regret-of-Infinite-Ochema.webp
12

Dr. Ratio Eidolon

Dr. Ratio Key Eidolons

Dr_Ratio_Eidolon2.webp
E2

Dr_Ratio_Eidolon4.webp
E4

Dr_Ratio_Eidolon6.webp
E6

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 Seele’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

Seele 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 Build

Dr. Ratio Best Light Cone

hp.webp
HP 1058
def.webp
DEF 529
atk.webp
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 F2P Light Cone

Dr. Ratio Main DPS Relics

Main Stats

Body.webp
CRIT DMG
spd.webp
ATK%
Sphere.webp
Imaginary%
Rope.webp
ATK%

Sub Stats

CRIT DMG➜ ATK%➜SPD

Wastelander of Banditry Desert (2 Set)

2 Set Effect – Increases Imaginary DMG by 10%.

 

The Ashblazing Grand Duke (2 Set)

2 Set Effect – Increase follow-up attack DMG dealt by 20%.

Inert 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 Sub DPS Light Cone

Light Cones Name
Worrisome, Blissfu
Rarity
Light Cones Type
The Hunt
How to Obtain
Light Cone Event Warp

Worrisome, Blissful Overview and effect

Worrisome, Blissful is a 5 star The Hunt Light Cones.

One At A Time

Increase the wearer’s CRIT Rate by 18%/21%/24%/27%/30% and DMG from follow-up attacks by 30%/35%/40%/45%/50%. After the wearer unleashes a follow-up attack, apply the Tame state to the target, stacking up to 2 stacks. When allies hit enemy targets under the Tame state, every Tame stack will increase the CRIT DMG received by 12%/14%/16%/18%/20%.

Dr. Ratio Sub DPS Relics

Main Stats

Body.webp
CRIT DMG
spd.webp
SPD
Sphere.webp
Imaginary%
Rope.webp
ER%

Sub Stats

CRIT DMG➜SPD➜ATK%

Wastelander of Banditry Desert (2 Set)

2 Set Effect – Increases Imaginary DMG by 10%.

 

The Ashblazing Grand Duke (2 Set)

2 Set Effect – Increase follow-up attack DMG dealt by 20%.

Inert 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
(Enemies has possesses a weakness to Quantum/Imaginary.)

Dr. Ratio
Main DPS
Imaginary

Dr. Ratio relies on his allies to apply debuffs to the enemy team in order to enhance his own damage output.

Silver Wolf
Support
Quantum

Silver Wolf’s talent can create three types of Bugs: Reduce ATK/DEF/SPD. Provide comprehensive support for Dr. Raito.

Tingyun
Support

Tingyun is a versatile support character who can increase the ATK of her allies. Her ultimate skill regenerates 50 Energy for a target ally and increases their DMG .

FuXuan
Tank

FuXuan is a character with a Preservation role, and her skills have the ability to reduce the damage inflicted on her own allies. Her ultimate skill, on the other hand, deals damage to all enemies while simultaneously restoring the health of her teammates. She is a versatile character capable of both offense and defense.

Dr. Ratio Premium Best Team

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

Topaz and Numby
Main DPS

Topaz is a main DPS in the team. 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.
(Skill : increase follow-up attack)

Dr. Ratio
Sub DPS
Imaginary

Dr. Ratio is Sub DPS in the team. He leverages the abilities of his allies to apply debuffs to the enemies, thereby enhancing his own stats and damage.

Pela
Support

Pela’s ultimate skill is capable of lowering the defense of all enemies. In addition, her passive technique allows her to take the initiative in battle by lowering the enemy’s defense.
(Ultimate : reduced DEF)

Huohuo
Healer

Huohuo is a Healer and Support in the team. Her Ultimate Skill can Regenerates Energy for all allies and increases their ATK%.
(Technique : reduce the enemy’s ATK for 2 turns)

Dr. Ratio Ascension Material

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.webp
Suppressing Edict x 3
4
50
32000
Usurpers-Scheme.png
Usurper’s Scheme x 10
Suppressing-Edict.webp
Suppressing Edict x 7
5
60
64000
Conquerors-Will.png
Conqueror’s Will x 6
Suppressing-Edict.webp
Suppressing Edict x 20
6
70
128000
Conquerors-Will.png
Conqueror’s Will x 9
Suppressing-Edict.webp
Suppressing Edict x 35