Dr. Ratio, an enigmatic figure within the Intelligentsia Guild in Honkai: Star Rail, this individual is known for their candid yet self-centered demeanor, often obscuring their appearance behind a peculiar plaster sculpture.
From a young age, Veritas Ratio showcased unmatched intelligence and talent, yet now they dub themselves a “Mundanite,” rejecting the notion of exclusive genius. Firm in their belief that intellect and creativity are universal traits, they aspire to disseminate knowledge across the cosmos, viewing ignorance as a pervasive ailment in need of remedy.
Dr. Ratio Character Information
| Rarity | 5-star |
| Path | The Hunt |
| Combat Type | Imaginary |
| Species | Human |
| World | Cosmic |
| How to Obtain | Panta Rhei
Proposal from Dr. Ratio |
| Release Date | 2024-01-17 |
| HP | 142 (level 1) – 1047 (level 80) |
| ATK | 62 (level 1) – 776 (level 80) |
| DEF | 103 (level 1) – 440 (level 80) |
| Speed | 103 (level 1) – 103 (level 80) |
| Taunt | 75 |
- Best Light Cone for Dr. Ratio: 5-Star Baptism of Pure Thought.
- Best Relics for Dr. Ratio: 4-Pieces Wastelander of Banditry Desert.
- Best Planar Ornaments for him: Inert Salsotto.
- Best team comps for Dr. Ration: Topaz, Tingyun, Luocha.
The Best Way to Build Dr. Ratio Character
Best Dr. Ratio DPS Build
Dr. Ratio’s optimal setup is as clear as day! It’s all about capitalizing on that Wastelander of Banditry Desert set to boost his critical rate and damage when the enemy is debuffed or imprisoned. With the 4-piece set effect activates reliably, maximizing his damage output, thanks to having a consistent debuffer on the team, it’s a recipe for success.
Furthermore, the Inert Salsotto artifact complements Dr. Ratio’s kit by enhancing his Ultimate and Follow-up Attack Damage when his CRIT Rate exceeds 50%. Achieving this threshold is straightforward, especially considering his unlockable Traces, ensuring that he can capitalize on the artifact’s bonuses effectively.
The Best Light Cone for Dr. Ratio
- 5-star Baptism of Pure Thought
| HP | 43 (level 1) – 952 (level 80) |
| ATK | 26 (level 1) – 582 (level 80) |
| DEF | 24 (level 1) – 529 (level 80) |
Ability: Mental Training
The wearer’s Critical Damage (CRIT DMG) is increased by 20%. Additionally, for each debuff on the enemy target, the wearer’s CRIT DMG dealt against this target increases by 8%, with stacking capabilities up to 3 times.
Upon utilizing the Ultimate to attack the enemy target, the wearer gains the Disputation effect. This effect boosts the Damage dealt by 36% and allows their follow-up attacks to ignore 24% of the target’s Defense (DEF). The Disputation effect persists for 2 turns.
- Worrisome, Blissful
| HP | 48 (level 1) – 1058 (level 80) |
| ATK | 26 (level 1) – 582 (level 80) |
| DEF | 21 (level 1) – 463 (level 80) |
Ability: One At A Time
The wearer’s Critical Rate is increased by 18%, and the Damage of their follow-up attacks is boosted by 30%. Following the wearer’s use of a follow-up attack, the Tame state is applied to the target, with stacking capabilities of up to 2 stacks.
For each Tame stack, Critical Damage (CRIT DMG) dealt is increased by 12% when attacking the enemy with it.
- In the Night
| HP | 48 (level 1) – 1058 (level 80) |
| ATK | 26 (level 1) – 582 (level 80) |
| DEF | 21 (level 1) – 463 (level 80) |
Ability: Flowers and Butterflies
The wearer’s Critical Rate is boosted by 18%. When above 100 SPD, for each 10 SPD after that, ATK DMG and Skill DMG can be increased by 6% and their Ultimate Crit DMG can be increased by 12% up to 6 times.
- Sleep Like the Dead
| HP | 48 (level 1) – 1058 (level 80) |
| ATK | 26 (level 1) – 582 (level 80) |
| DEF | 21 (level 1) – 463 (level 80) |
Ability: Sweet Dreams
The wearer’s Critical Damage (CRIT DMG) is heightened by 30%. In instances where the wearer’s Basic Attack or Skill fails to result in a Critical Hit, their Critical Rate is increased by 36% for 1 turn. Cannot be activated within 3 turns after the last effect.
- Cruising in the Stellar Sea
| HP | 43 (level 1) – 952 (level 80) |
| ATK | 24 (level 1) – 529 (level 80) |
| DEF | 21 (level 1) – 463 (level 80) |
Ability: Chase
The wearer’s Critical Rate is raised by 8%, with an additional 8% increase against enemies with HP less than or equal to 50%. Moreover, when the wearer defeats an enemy, their Attack (ATK) is boosted by 20% for 2 turns.
- Swordplay
| HP | 43 (level 1) – 952 (level 80) |
| ATK | 21 (level 1) – 476 (level 80) |
| DEF | 15 (level 1) – 330 (level 80) |
Ability: Answers of Their Own
For each time the same target is hit by the wearer, the Damage dealt is increased by 8%, with stacking capabilities up to 5 times. If the wearer changes targets, the effect will disappear.
Best Relics for Dr. Ratio
1. Wastelander of Banditry Desert (4 pieces)
The best Relics set for Dr. Ratio character is 4-pieces Wastelander of Banditry Desert set, as it increases Imaginary damage for him by 10%. When engaging debuffed enemies, Dr. Ratio experiences a 10% boost in Critical Rate. Additionally, Critical Damage surges by 20% when targeting Imprisoned foes.
2.Wastelander of Banditry Desert (2 pieces); The Ashblazing Grand Duke (2 pieces)
Imaginary damage is increased by 10%.
Follow-up ATK DMG is increased by 20%.
Best Ornaments for Dr. Ratio
1. Inert Salsotto
Crit Rate is increased by 8%. If Crit Rate is above 50%,
Ultimate and Follow-up ATK DMG is increased by 15%
2. Space Sealing Station
Having 2 of this ornament will gain the wearer 12% more damage. If they have SPD above 120, they will gain 12% more.
3. Firmament Frontline Glamoth
This item enhances the wearer’s ATK by 12%. Moreover, when the wearer’s SPD equals or exceeds 135/160, they deal an additional 12%/18% damage.
Best Stats for Dr. Ratio
- Body: CRIT Rate / CRIT DMG
- Feet: SPD / ATK%
- Sphere: Imaginary DMG
- Link Rope: ATK%
Best Substats for Dr. Ratio
- CRIT DMG
- CRIT Rate
- ATK%
- SPD
How to Build Dr. Ratio Team Comp
Dr. Ratio Team Comp (Free to Play)
- DPS: Dr. Ratio
- Support: Yukong
- Support: Asta
- Healer: Natasha
This free-to-play team adopts a classic Hypercarry configuration, with Dr. Ratio serving as the primary Damage Per Second (DPS) dealer. Yukong plays a crucial role in boosting Dr. Ratio’s Critical stats, enhancing his damage potential. Meanwhile, Asta contributes by buffing Dr. Ratio’s Speed (SPD) and has the capability to inflict Burn on enemies, further augmenting the team’s offensive capabilities.
Dr. Ratio Generalist Team Comp
- DPS: Dr. Ratio
- Buffer: Topaz
- Debuffer: Silver Wolf
- Healer: Huohuo
Dr. Ratio’s optimal teams commonly feature both a buffer and a debuffer, with the latter being particularly crucial for enhancing Dr. Ratio’s Follow-up Attacks.
Topaz proves to be an excellent complement to Dr. Ratio, offering additional Damage (DMG) and amplifying his Follow-up Attack Damage. On the other hand, Silver Wolf significantly boosts Dr. Ratio’s chances of executing Follow-up attacks by inflicting numerous debuffs on enemies. This synergy ensures that Dr. Ratio’s potential is fully realized, resulting in devastating damage output.
Dr. Ratio Mono-Imaginary Team Comp
- DPS: Dr. Ratio
- Support: Yukong
- Support: Silver Wolf
- Healer: Luocha
This team composition proves effective in specific scenarios where the enemy is vulnerable to Quantum but not Imaginary. Silver Wolf becomes essential in this setup as she can apply an Imaginary Weakness on enemies.
However, if the enemy is already weak to Imaginary, you have the flexibility to replace Silver Wolf with another debuffer to maintain the team’s effectiveness.
Dr. Ratio Abilities
- Basic Attack: Mind is Might – An enemy is inflicted Imaginary Damage equal to 50% – 110% Dr. Ratio’s ATK damage.
- Skill: Intellectual Midwifery – An enemy is inflicted Imaginary Damage equal to 75% – 165% Dr. Ratio’s ATK damage.
- Ultimate: Syllogistic Paradox – Dr. Ratio inflicts Imaginary Damage equivalent to 144%–259.2% of his ATK on a single enemy target and imposes Wiseman’s Folly. When Dr. Ratio’s allies target an enemy afflicted with Wiseman’s Folly, Dr. Ratio executes his Talent’s follow-up attack once against this target.
Wiseman’s Folly can activate up to 2 times and exclusively impacts the most recent target of Dr. Ratio’s Ultimate. This activation count resets following the use of Dr. Ratio’s Ultimate.
- Talent: Cogito, Ergo Sum – Upon using his Skill, Dr. Ratio has a fixed 40% chance of executing a follow-up attack against his target once, dealing Imaginary Damage equal to 135%–297% of his ATK. For each debuff the target enemy possesses, the chance of launching the follow-up attack increases by 20%.
In the event that the target enemy is defeated before the follow-up attack triggers, the follow-up attack will instead target a single random enemy.
Summation: When Skill is used, for each debuff on the enemy, gain 2.5% Crit Rate and 5% Crit DMG up to 6 times
Inference: When Skill is used, the enemy’s Effect RES is reduced by 10%
Deduction: When an attack is used, for each debuff on the enemy with 3 or more debuffs, gain 10% DMG to a maximum of 50%
- Technique: Mold of Idolatry – Upon using his Technique, Dr. Ratio creates a special dimension that Taunts nearby enemies, persisting for 10 seconds. Upon entering battle with enemies within this special dimension, there is a guaranteed base chance of 100% to reduce each single enemy target’s Speed (SPD) by 15% for 2 turns. Only one dimension created by allies can exist at a time.
Dr. Ratio Level-up Materials
| Level-up | Upgrade Materials | Credit Costs | Reward |
| Level 20 > 30 | x5 Thief’s Instinct | 4.000 | x1 regular Star Rail Pass |
| Level 30 > 40 | x10 Thief’s Instinct | 8.000 | None |
| Level 40 > 50 | x6 Conqueror’s Will, x3 Suppressing Edict | 16.000 | x1 regular Star Rail Pass |
| Level 50 > 60 | x9 Conqueror’s Will, x7 Suppressing Edict | 40.000 | None |
| Level 60 > 70 | x6 Usurper’s Scheme, x20 Suppressing Edict | 80.000 | x1 regular Star Pass |
| Level 70 > 80 | x9 Usurper’s Scheme, x35 Suppressing Edict | 160.000 | None |
| In total | x65 Suppressing Edict
x15 Thief’s Instinct x15 Usurper’s Scheme x15 Conqueror’s Will |
308.000 |
Conclusion
Dr. Ratio is renowned as one of the most formidable units for dealing significant single-target damage. With his potent Follow-up attacks, he excels particularly against bosses, showcasing enhanced strength when enemies are afflicted by debuffs.
For those seeking a dominant boss-killer with a focus on devastating Follow-up Attacks, investing in Dr. Ratio is highly recommended.
