Honkai: Star Rail Dr. Ratio Guide: Best Relics, Light Cone, Team Comps & How to Get For Free


The enigmatic Dr. Ratio has arrived in Honkai Star Rail, and with him comes a whirlwind of potential. But before you unleash his devastating combo prowess, let’s make sure you’ve snagged him and honed his arsenal to perfection.

How to Get Dr. Ratio in Honkai: Star Rail

For those aspiring to add Dr. Ratio to their roster without spending a dime, the opportunity presents itself between the start of phase 2 version 1.6 on January 17, 2024, and the end of version 2.1. Complete the mission “The Blue – A Moment of Peace” during this period, and Dr. Ratio will be sent to you via in-game mail, ready to join your team.

Honkai Star Rail Dr. Ratio
Image via HoYoVerse

The Blue — A Moment of Peace is conveniently part of the tutorial quests in Honkai Star Rail, making it accessible to newcomers. This mission is embedded within the first Trailblaze Mission, “Today Is Yesterday’s Tomorrow,” providing an introductory gacha tutorial that not only rewards players with Asta but also unlocks the Travel Log feature.

Honkai: Star Rail Dr. Ratio Build Guide

Best Light Cone

Now, to unlock his true potential, let’s talk Light Cones. The holy grail for Dr. Ratio is Baptism of Pure Thought. It boosts his CRIT DMG significantly, and every enemy debuff you apply translates to even more crit against them. Plus, his Ultimate unleashes a “Disputation” effect that amplifies his damage and bypasses enemy defenses. It’s a force to be reckoned with!

If Baptism eludes you, fear not! Worrisome, Blissful, In the Night offer solid alternatives. Need something readily available? Sleep Like the Dead or Cruising in the Stellar Sea will do the trick. For 4-star options, Swordplay and Only Silence Remains are excellent choices.

Best Team Comps

Dr. Ratio shines brightest when his follow-up attacks land with brutal precision. Who better to pair him with than characters who excel at applying debuffs and setting up enemies for punishment? Topaz, Silver Wolf, and Luocha make fantastic companions. Craving a mono-Imaginary team? Combine Dr. Ratio with Welt, Luocha, and Yukong.

For a budget-friendly option, consider Yukong, Natasha, and Asta. They might not be the flashiest crew, but they’ll still dish out impressive damage with Dr. Ratio leading the charge.

Best Relics and Ornaments

For Relics, the Wastelander of Banditry Desert set reigns supreme. It amplifies Imaginary damage and enhances Dr. Ratio’s crit stats against debuffed and Imprisoned enemies. A perfect match for his follow-up attack playstyle.

Don’t forget the Inner Salsotto Ornament set! It bumps his CRIT Rate and rewards high crit builds with boosted Ultimate and follow-up attack damage.

Trace Materials

  • x8 Tracks of Destiny
  • x12 Past Grievances of the Planet-Boring Disaster
  • x18 Arrow of the Beast Hunter
  • x41 Thief’s Instinct
  • x56 Usurper’s Scheme
  • x58 Conqueror’s Will
  • x69 Arrow of the Demon Slayer
  • x139 Arrow of the Starchaser
  • 3 million Credits

Ascension Materials

Ascension Level Materials Credit cost Reward
20 x5 Thief’s Instinct 4,000 x1 regular Star Rail Pass
30 x10 Thief’s Instinct 8,000 None
40 x6 Usurper’s Scheme, x3 Suppressing Edict 16,000 x1 regular Star Rail Pass
50 x9 Usurper’s Scheme, x7 Suppressing Edict 40,000 None
60 x6 Conqueror’s Will, x20 Suppressing Edict 80,000 x1 regular Star Pass
70 x9 Conqueror’s Will, x35 Suppressing Edict 160,000 None

With this guide as your starting point, you’re well on your way to unlocking the full potential of Dr. Ratio and carving your own path to victory in Honkai: Star Rail! Get out there, Trailblazers, and show the Stellaron what a well-equipped Dr. Ratio can do!