What is the best Light Cone for Rappa?

Flickering Stars is the closest fit on the data: it is a 5-star Erudition Light Cone with 635 base ATK at level 80, and its passive acts on ATK. A Dream Scented in Wheat is the best 4-star alternative.

Which relic set should Rappa use?

Hero of Triumphant Song. Its 2-piece bonus is: Increases ATK by 12%. Its 4-piece bonus is: While the wearer's memosprite is on the field, increases the wearer's SPD by 6%. When the wearer's memosprite attacks, increases the wearer's and memosprite's CRIT DMG by 30%, lasting for 2 turn(s).

Which Planar Ornament should Rappa use?

Firmament Frontline: Glamoth. Its 2-piece bonus is: Increases the wearer's ATK by 12%. When the wearer's SPD is equal to or higher than 135/160, the wearer deals 12%/18% more DMG. Planar Ornaments have no 4-piece bonus; the sphere and the rope are the whole set.

Rappa, Imaginary Erudition character | Honkai: Star Rail

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Galaxy Ranger

Rappa Build

Build guide · Honkai: Star Rail

ImaginaryEruditionMain DPS

English voice: Kendell Byrd

The best Rappa build in Honkai: Star Rail (Version 4.6) is Ninjutsu Inscription: Dazzling Evilbreaker with Iron Cavalry Against the Scourge. Updated November 5, 2026

Abilities Traces Materials Eidolons

Where these rankings come fromThe light cone order, relic sets and stat priorities on this tab are prydwen.gg’s, measured in play and rephrased. Relative damage figures are ratios against the bottom of each ranking, not absolute numbers, and each one holds only for the superimposition and team its row states. Everything else (base stats, passive text, material totals) is read from the game’s own data.

Light cones

4 ranked

Ninjutsu Inscription: Dazzling Evilbreaker, 5★ Erudition Light Cone | Honkai: Star Rail

BISNinjutsu Inscription: Dazzling Evilbreaker

120.11% at S1

582

Base ATK · lv 80

953 HP529 DEF

After the Charmony Fall, 4★ Erudition Light Cone | Honkai: Star Rail

#2After the Charmony Fall

100% at S5

476

Base ATK · lv 80

847 HP397 DEF

Eternal Calculus, 5★ Erudition Light Cone | Honkai: Star Rail

#3Eternal Calculus

95.38% at S5

529

Base ATK · lv 80

1058 HP397 DEF

Make the World Clamor, 4★ Erudition Light Cone | Honkai: Star Rail

#4Make the World Clamor

83.97% at S5

476

Base ATK · lv 80

847 HP397 DEF

Relics

3 sets

CoreIron Cavalry Against the Scourge

Best generic damage option for Rappa in traditional Super Break compositions.

2PCIncreases Break Effect by 16%.

4PCIf the wearer's Break Effect is 150% or higher, the Break DMG dealt to the enemy target ignores 10% of their DEF. If the wearer's Break Effect is 250% or higher, the Super Break DMG dealt to the enemy target additionally ignores 15% of their DEF.

Also works

Planar ornaments

Sphere and rope · 2-piece only

CoreTalia: Kingdom of Banditry

Best all-around set for Rappa with no strings attached outside of its 145 speed requirement which you should be building towards anyways in her standard build.

2PCIncreases the wearer's Break Effect by 16%. When the wearer's SPD reaches 145 or higher, the wearer's Break Effect increases by an extra 20%.

Also works

Forge of the Kalpagni Lantern

Main stats

Ultimate · 140 energy

Body: ATK%
Feet: Speed
Planar Sphere: ATK%
Link Rope: Break Effect >= Energy Regen Rate

Substat priority

Highest first

1SPD (Until Desired Breakpoint)Best
2Break Effect
3ATK%

Trace priority

Level in this order

#1
Talent
Max first
#2
Ultimate
Then
#3
Basic
Next
#4
Skill
Later

Major traces, best first: Ninjutsu Inscription: Sea Echo (A4) > Ninjutsu Inscription: Withered Leaf (A6) > Ninjutsu Inscription: Sky High (A2)

Best Eidolons

E3 and E5 raise levels only

E1Returned Is the Revenant With No Ferry Toll
E2Free Is the Mind Enlightened by Haikus
E3Level bump
E4Lost Is the Nindō Devoured by Time
E5Level bump
E6Righteous Is the Wrath That Spares No Evil

E1
Returned Is the Revenant With No Ferry Toll
Game text
During the "Sealform" state entered by using Ultimate, DMG dealt by Rappa ignores 15% of the targets' DEF. After exiting the "Sealform" state, regenerates 20 Energy.
E2
Free Is the Mind Enlightened by Haikus
Game text
The Enhanced Basic ATK's first 2 hits have their Toughness Reduction against the one designated enemy increased by 50%.
E4
Lost Is the Nindō Devoured by Time
Game text
While in the "Sealform" state, increases all allies' SPD by 12%.
E6
Righteous Is the Wrath That Spares No Evil
Game text
When battle starts, Rappa gains 5 point(s) of her Talent's Charge, and its upper limit increases by 5 point(s). After launching the third hit of "Ningu: Demonbane Petalblade," gains 5 point(s) of Charge.

Teams

1 team

Rappa team

Imaginary · BreakLeads

Break damage across a whole wave rather than one target, so both Harmony slots go to Break amplification and the sustain adds Break of its own.

Rappa, this characterMain DPS
Ruan MeiBreak amplifier
Trailblazer (Harmony)Break support
LingshaSustain · Break

All teams, with every replacement

Honkai: Star Rail 5★ Imaginary Erudition Main DPS

Rappa build summary

Updated November 5, 2026

Ninjutsu Inscription: Dazzling Evilbreaker tops the light cone ranking for Rappa, at 120.11% relative damage at S1, ahead of After the Charmony Fall, Eternal Calculus and Make the World Clamor. That order is prydwen.gg's, measured in play and rephrased here; every row of it sits under Light cones below.

Run Iron Cavalry Against the Scourge on Rappa, with Thief of Shooting Meteor and Eagle of Twilight Line behind it. The planar ornament is Talia: Kingdom of Banditry. Main stats are ATK% body, Speed feet, ATK% sphere, Break Effect >= Energy Regen Rate rope. Roll substats in the order SPD (Until Desired Breakpoint) > Break Effect > ATK%.

Trace priority is Talent > Ultimate > Basic > Skill. The Ultimate costs 140 energy, which is what an Energy Regeneration Rate target has to clear.

The strongest team is Rappa, Ruan Mei, Trailblazer (Harmony) and Lingsha, built around Rappa: Imaginary · Break.

Role: Main DPS / Support
Best light cone: Ninjutsu Inscription: Dazzling Evilbreaker
Alternatives: After the Charmony Fall, Eternal Calculus, Make the World Clamor
Relic set: Iron Cavalry Against the Scourge
Planar ornament: Talia: Kingdom of Banditry
Main stats: ATK% body, Speed feet, ATK% sphere, Break Effect >= Energy Regen Rate rope
Substat priority: SPD (Until Desired Breakpoint) > Break Effect > ATK%
Trace priority: Talent > Ultimate > Basic > Skill
Best team: Rappa, Ruan Mei, Trailblazer (Harmony), Lingsha
Ultimate energy cost: 140 energy
Key ascension material: 65× Chordal Mirage
Last updated: November 5, 2026

Rappa build FAQ

What is the best Light Cone for Rappa?: Flickering Stars is the closest fit on the data: it is a 5-star Erudition Light Cone with 635 base ATK at level 80, and its passive acts on ATK. A Dream Scented in Wheat is the best 4-star alternative.
Which relic set should Rappa use?: Hero of Triumphant Song. Its 2-piece bonus is: Increases ATK by 12%. Its 4-piece bonus is: While the wearer's memosprite is on the field, increases the wearer's SPD by 6%. When the wearer's memosprite attacks, increases the wearer's and memosprite's CRIT DMG by 30%, lasting for 2 turn(s).
Which Planar Ornament should Rappa use?: Firmament Frontline: Glamoth. Its 2-piece bonus is: Increases the wearer's ATK by 12%. When the wearer's SPD is equal to or higher than 135/160, the wearer deals 12%/18% more DMG. Planar Ornaments have no 4-piece bonus; the sphere and the rope are the whole set.

Rappa Build

Light cones

Relics

Planar ornaments

Main stats

Substat priority

Trace priority

Best Eidolons

Returned Is the Revenant With No Ferry Toll

Free Is the Mind Enlightened by Haikus

Lost Is the Nindō Devoured by Time

Righteous Is the Wrath That Spares No Evil

Teams

Rappa build FAQ