Honkai: Star Rail – Dr Ratio Build Guide

Nazarii Verbitskiy

Who doesn’t love freebies? We bet every Honkai: Star Rail fan does and would like to gain the new 5-star character Dr. Ratio for free.

The new Imaginary Hunt character is really solid and boasts high single-target DPS. Some players even rank him as Tier S, of course, when used with the proper build.

But take no hurry with trying to find the best one, we’ve done it instead of you! Read this article and discover the best Dr. Ratio build in Honkai: Star Rail.

For newbies, we’ve also explained how & when to get the new 5-star character!

Dr Ratio Build Guide
Photo: miHoYo

Honkai: Star Rail: Who Is Dr Ratio?

Dr Ratio (Veritas), commonly known as Dr Ratio is the new 5-star Imaginary Hunt playable character in Honkai: Star Rail. Dr Ratio is known for his eccentric personality and impressive single-target DPS capabilities.

Dr Ratio utilizes a unique system of follow-up attacks to deal devastating damage to the enemies. He significantly benefits from debuffs, with each debuff increasing his critical rate and damage.

However, his damage potential significantly relies on enemy debuffs and boosts, which might require you to carefully pick his allies to unlock the full potential.

Honkai: Star Rail Dr Ratio: When & How To Get 

Luckily for the players, Dr. Ratio is the new free five-star character in Honkai: Star Rail version 1.6. Follow these instructions to get Dr. Ratio for free:

  1. Unlock the in-game mailbox. Veterans must have unlocked this feature, but it’s extremely important for newbies who are only starting their journey in Honkai Star Rail.
  2. After that, players need to complete the mission ‘The Blue – A Moment of Peace’ 
  3. Voila! Now you can get Dr. Ratio for free by logging into the game. By doing so, Dr. Ratio will be automatically sent to your in-game mail, where you can collect this hero and add him to your collection.

You can get Dr. Ratio on any of your accounts as long as you meet all the required criteria. However, ensure to claim the unit from in-game mail before the end of Honkai Star Rail 2.1. After the end of the 2.1 version, Dr. Ratio will disappear from the mailbox and you won’t be able to get this character for free.

Best Build For Dr Ratio In Honkai: Star Rail

Best Build For Dr Ratio
Photo: miHoYo

Now that you know who Dr. Ratio is and how to obtain this character, it’s time to discover the best Dr. Ratio builds. The unit has high DPS, so he can wear different hats.

Dr. Ratio DPS Build

  • Core Stat Priorities: CRIT Rate / SPD or ATK% / Imaginary DMG / ATK%
  • Light Cone: Baptism of Pure Thought
  • Relics: Wastelander of Bandirty Desert
Dr. Ratio DPS Build
Photo: miHoYo

Baptism of Pure Thought is the best light cone for D.Ratio, and it features alongside the character’s banner.

Baptism of Pure Thought increases his CRIT DMG by 20%/23%/26%/29%/32%, while also increasing CRIT DMG for every debuff by 6%/7%/8%/9%/10%, with a maximum of 3 stacks.

Dr. Ratio DPS Build
Photo: miHoYo

The Wastelander of Bandirty Desert increases Imaginary DMG by 10%. When equipped in 4 pieces, it increases the CRIT Rate by 10% against debuffed enemies and 20% against imprisoned enemies.

Dr. Ratio Sub DPS Build

  • Core Stat Priorities: CRIT DMG / ATK% / Imaginary DMG / ATK%
  • Light Cone: Baptism of Pure Thought
  • Relics: Inert Salsotto
Dr. Ratio Sub DPS Build
Photo: miHoYo

Baptism of Pure Thought increases his CRIT DMG by 20%/23%/26%/29%/32%, while also increasing CRIT DMG for every debuff by 6%/7%/8%/9%/10%, with a maximum of 3 stacks.

Dr. Ratio Sub DPS Build
Photo: miHoYo

Inert Salsotto increases Dr. Ratio’s CRIT rate by 8%. When the CRIT Rate becomes 50% or higher, it increases Ultimate and follow-up attack damage by 15%.

Dr. Ratio Abilities Priority

dr ratio abilities priority
Photo: Genshinlab

While leveling up Dr. Ratio, we highly suggest following the next abilities priority (it works for both DPS and sub-DPS builds):

  • Talent – Ultimate – Skill – Normal Atk

Best Teams 

dr ratio Best Teams
Photo: miHoYo

Keep reading and learn about three powerful teams allowing you to unleash the full potential of Dr. Ratio in Honkai: Star Rail.

Team #1: F2P Team

dr ration f2p team
Photo: Prydwen
  • Team: Dr Ratio, Yukong, Asta, Natasha

In this free-to-play (F2P) team, Dr Ratio is the main DPS hero, and others work to increase his damage output.

Yukong increases Dr. Ratio’s CRIT damage and rate, while Asta buffs speed and gives Dr. Ratio a chance to burn enemies while attacking. Natasha works as a healer and sub-DPS support.

Team #2: DPS Team

dr ratio DPS Team
Photo: Prydwen
  • Team: Dr. Ratio – Yukong – Topaz and Numby – Huohuo

Dr. Ratio synergizes with many characters, but with three buffers he showed peak performance. Huohuo, Yukong, and Topaz work all together to make every Dr. Ratio’s attack devastating.

Yukong is the most important buffer. She increases the team’s Crit Rate, Crit DMG, ATK, Imaginary DMG, and SPD, which makes her one of the best characters to use with Dr. Ratio.

Being a healer, Huohuo provides a significant healing boost and much-needed energy restoration. Huohuo also provides a small ATK boost, increasing Dr. Ratio’s DPS further.

Topaz and Numby debuff enemies and perform as sub-DPS by spamming their attacks while allies attack marked enemies. Topaz and Numby also increase incoming damage to marked hostiles by 50%.

Team #3: Sub DPS Team

dr ratio Sub DPS Team
Photo: Prydwen
  • Team: Dr. Ratio, Pela, Huohuo, Topaz and Numby

Topaz and Numby are the main DPS in this team. Topaz uses her skill to increase the follow-up damage of targeted enemies, and Numby constantly deals damage with unstoppable attacks.

Dr. Ratio is played as sub-DPS. He uses the abilities of his allies to apply debuffs and increase his stats and DPS. 

Pela is the most powerful debuffer in the team. Pela’s ultimate skill lowers the defense of all enemies and her passive skill lowers defense even further.

Huohuo wears many different hats. She is a healer and support in this team, and her ultimate skill regenerates much-needed energy, while also increasing allies ATK.

Photo: miHoYo


That’s it with the best Dr Ratio build. As you can see, this versatile high-DPS unit can be played in different roles, but each with a focus on DPS. We hope our guide helped you to decide which light cones and relics to use for Dr Ratio!

But before you leave, check out the best builds for Fu Xuan and Ruan Mei. These characters also synergize with Dr. Ratio and can be used to create powerful compositions!

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