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OverviewData

DEF is one of the stats in Honkai: Star Rail, used by both characters and enemies. It is a stat that decreases DMG taken. Some character skills will also deal DMG or create shields based on DEF.

It multiplies incoming DMG by the following:

When a unit's DEF becomes 0 due to DEF Reduction/Ignore, the DEF Multiplier will reach the cap of 100%.

Character DEF[]

Characters' Base DEF is determined by their level and their equipped Light Cone's level, while percentage and additive DEF bonuses can be obtained from Relics, Light Cone abilities, character skills, etc.

Enemy DEF[]

Enemies' Base DEF is determined by their level:

Therefore:

The only exceptions to this are Trotters (e.g. Warp Trotter, Sequence Trotter, Trotter of Destruction), where:

Abilities[]

Toggle Descriptions
1 ability increase DEF of characters:

Character Name Description Type Tag
Aventurine Aventurine After using the Technique, 1 of the following effects will be granted:
There is a chance for DEF to increase by 24%.
There is a high chance for DEF to increase by 36%.
There is a small chance for DEF to increase by 60%.

When this Technique is used repeatedly, the acquired effect with the highest buff value is retained.
When the next battle starts, increases all allies' DEF by the corresponding value, lasting for 3 turn(s).
Technique Defense

Toggle Descriptions
7 abilities reduce DEF of enemies:

Character Name Description Type Tag
Silver Wolf Silver Wolf Silver Wolf can create three types of Bugs: reduce ATK by 5%–11%, reduce DEF by 4%–8.8%, and reduce SPD by 3%–6.6%.
Every time Silver Wolf attacks, she has a 60%–74.4% base chance to implant a random Bug that lasts for 3 turn(s) in the enemy target.
Talent Impair
Black Swan Black Swan Deals Wind DMG equal to 45%—99% of Black Swan's ATK to a single target enemy and any adjacent targets. At the same time, there is a 100% base chance of inflicting 1 stack of Arcana on the target enemy and the adjacent targets. And there is a 100% base chance of reducing the DEF of the target enemy and the adjacent targets by 14.8%—22%, lasting for 3 turn(s). Skill Blast
Fugue Fugue After using Technique, inflicts Daze on enemies within a certain area, lasting for 10 second(s). While Dazed, enemies will not actively attack ally targets.
After entering battle via actively attacking Dazed enemies, Fugue's action advances by 40%, with a 100% base chance to inflict each enemy target with the same DEF Reduction state as that applied by Fugue's Skill, lasting for 2 turn(s).
Technique Impair
Pela Pela Immediately attacks the enemy. Upon entering battle, Pela deals Ice DMG equal to 80% of her ATK to a random enemy, with a 100% base chance of lowering the DEF of all enemies by 20% for 2 turn(s). Technique
Silver Wolf Silver Wolf There's a 85%–103% base chance to decrease the target enemy's DEF by 36%–46.8% for 3 turn(s). And at the same time, deals Quantum DMG equal to 228%–410.4% of Silver Wolf's ATK to the target enemy. Ultimate Single Target
Fugue Fugue Grants one designated ally "Foxian Prayer". Enters the "Torrid Scorch" state, lasting for 3 turn(s). The duration reduces by 1 at the start of Fugue's every turn. "Foxian Prayer" only takes effect on the most recent target of Fugue's Skill.
The ally target with "Foxian Prayer" increases their Break Effect by 15%—33% and can also reduce Toughness even when attacking enemies that don't have the corresponding Weakness Type, with the effect equivalent to 50% of the original Toughness Reduction value. This cannot stack with other Toughness Reduction effects that also ignore Weakness Type.
While in the "Torrid Scorch" state, Fugue enhances her Basic ATK. Every time an ally target with "Foxian Prayer" attacks, Fugue has a 100% base chance to reduce the attacked enemy target's DEF by 8%—20%, lasting for 2 turn(s).
Skill Support
Pela Pela Deals Ice DMG equal to 60%–108% of Pela's ATK to all enemies, with a 100% base chance to inflict Exposed on all enemies.
When Exposed, enemies' DEF is reduced by 30%–42% for 2 turn(s).
Ultimate AoE

Toggle Descriptions
1 ability ignore DEF of enemies:

Character Name Description Type Tag
Black Swan Black Swan Every time an enemy target receives DoT at the start of each turn, there is a 50%—68% base chance for it to be inflicted with Arcana.
While afflicted with Arcana, enemy targets receive Wind DoT equal to 96%—264% of Black Swan's ATK at the start of each turn. Each stack of Arcana increases this DoT DMG multiplier by 4.8%—13.2%. Then Arcana resets to 1 stack. Arcana can stack up to 50 times.
Only when Arcana causes DMG at the start of an enemy target's turn, Black Swan triggers additional effects based on the number of Arcana stacks inflicted on the target:
When there are 3 or more Arcana stacks, deals Wind DoT equal to 72%—198% of Black Swan's ATK to adjacent targets, with a 50%—68% base chance of inflicting 1 stack of Arcana on adjacent targets.
When there are 7 or more Arcana stacks, enables the current DoT dealt this time to ignore 20% of the target's and adjacent targets' DEF.
Talent Impair

Bonus Abilities[]

Toggle Descriptions
3 Bonus Abilities increase DEF of characters:

Character Name Description Ascension
Requirement
Bronya Bronya At the start of the battle, all allies' DEF increases by 20% for 2 turn(s). 4
Trailblazer (Destruction) Trailblazer (Destruction) Each Talent stack increases the Trailblazer's DEF by 10%. 4
Asta Asta Asta's DEF increases by 6% for every current Charging stack she possesses. 6

Eidolons[]

Toggle Descriptions
2 Eidolons increase DEF of characters:

Character Name Description Level
Aventurine Aventurine When triggering his Talent's follow-up attack, first increases Aventurine's DEF by 40% for 2 turn(s), and additionally increases the Hits Per Action for his talent's follow-up attack by 3. 4
Trailblazer (Preservation) Trailblazer (Preservation) After the Trailblazer use enhanced Basic ATK or Ultimate, their DEF increases by 10%. Stacks up to 3 time(s). 6

Toggle Descriptions
2 Eidolons reduce DEF of enemies:

Character Name Description Level
Lingsha Lingsha Lingsha's Weakness Break Efficiency increases by 50%. When an enemy unit's Weakness is Broken, reduces their DEF by 20%. 1
Misha Misha Before each hit of the Ultimate lands, there is a 24% base chance of reducing the target's DEF by 16% for 3 turn(s). 2

Toggle Descriptions
9 Eidolons ignore DEF of enemies:

Character Name Description Level
Boothill Boothill When the battle starts, obtains 1 stack of Pocket Trickshot. When Boothill deals DMG, ignores 16% of the enemy target's DEF. 1
Firefly Firefly When using the Enhanced Skill, ignores 15% of the target's DEF. The Enhanced Skill does not consume Skill Points. 1
Sunday Sunday When Sunday uses Skill, the target character can ignore 16% of enemy target's DEF to deal DMG and their summon can ignore 40% of enemy target's DEF to deal DMG, lasting for 2 turn(s). 1
Ruan Mei Ruan Mei While the Ultimate's field is deployed, the DMG dealt by all allies ignores 20% of the target's DEF. 1
Rappa Rappa 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. 1
Yunli Yunli When dealing DMG via Counter, ignores 20% of the target's DEF. 2
Sparkle Sparkle Each Talent stack allows allies to ignore 8% of the enemy target's DEF when dealing DMG to enemies. 2
Jade Jade When using Ultimate, the DMG Jade deals ignores 12% of enemy targets' DEF, lasting for 3 turn(s). 4
Argenti Argenti When using Ultimate, ignores 30% of enemy targets' DEF. 6

Relic Sets[]

Toggle Set Bonuses
2 Relic Sets increase DEF of characters:

Icon Set Pieces Bonuses
Item Belobog of the Architects Belobog of the Architects Belobog's Fortress of PreservationBelobog's Iron Defense 2 Piece: Increases the wearer's DEF by 15%. When the wearer's Effect Hit Rate is 50% or higher, the wearer gains an extra 15% DEF.
Item Knight of Purity Palace Knight of Purity Palace Knight's Forgiving CasqueKnight's Silent Oath RingKnight's Solemn BreastplateKnight's Iron Boots of Order 2 Piece: Increases DEF by 15%.
4 Piece: Increases the max DMG that can be absorbed by the Shield created by the wearer by 20%.

Toggle Set Bonuses
3 Relic Sets ignore DEF of enemies:

Icon Set Pieces Bonuses
Item Genius of Brilliant Stars Genius of Brilliant Stars Genius's Ultraremote Sensing VisorGenius's Frequency CatcherGenius's Metafield SuitGenius's Gravity Walker 2 Piece: Increases Quantum DMG by 10%.
4 Piece: When the wearer deals DMG to the target enemy, ignores 10% DEF. If the target enemy has Quantum Weakness, the wearer additionally ignores 10% DEF.
Item Iron Cavalry Against the Scourge Iron Cavalry Against the Scourge Iron Cavalry's Homing HelmIron Cavalry's Crushing WristguardIron Cavalry's Silvery ArmorIron Cavalry's Skywalk Greaves 2 Piece: Increases Break Effect by 16%.
4 Piece: If 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.
Item Prisoner in Deep Confinement Prisoner in Deep Confinement Prisoner's Sealed MuzzlePrisoner's Leadstone ShacklesPrisoner's Repressive StraitjacketPrisoner's Restrictive Fetters 2 Piece: ATK increases by 12%.
4 Piece: For every DoT the target enemy is afflicted with, the wearer will ignore 6% of its DEF when dealing DMG to it. This effect is valid for a max of 3 DoTs.

Light Cones[]

Toggle Columns:
RarityPathStatsPassives
7 Light Cones increase DEF of characters:

Icon & Name Rarity Path Stats Passive
Light Cone Amber (Light Cone)
Amber
3 Stars Icon Path Preservation Medium Preservation Unknown Stasis
Increases the wearer's DEF by 16~32%. If the wearer's current HP is lower than 50%, increases their DEF by a further 16~32%.
Light Cone Concert for Two
Concert for Two
4 Stars Icon Path Preservation Medium Preservation HP: 43~952
ATK: 16~370
DEF: 21~463
Inspire
Increases the wearer's DEF by 16~32%. For every on-field character that has a Shield, the DMG dealt by the wearer increases by 4~8%.
Light Cone Day One of My New Life
Day One of My New Life
4 Stars Icon Path Preservation Medium Preservation HP: 43~952
ATK: 16~370
DEF: 21~463
At This Very Moment
Increases the wearer's DEF by 16~24%. After entering battle, increases All-Type RES of all allies by 8~12%. Abilities of the same type cannot stack.
Light Cone Inherently Unjust Destiny
Inherently Unjust Destiny
5 Stars Icon Path Preservation Medium Preservation HP: 48~1,058
ATK: 19~423
DEF: 30~661
All-In
Increases the wearer's DEF by 40~64%. When the wearer provides a Shield to an ally, the wearer's CRIT DMG increases by 40~64%, lasting for 2 turn(s). When the wearer's follow-up attack hits an enemy target, there is a 100~160% base chance to increase the DMG taken by the attacked enemy target by 10.0~16.0%, lasting for 2 turn(s).
Light Cone Moment of Victory
Moment of Victory
5 Stars Icon Path Preservation Medium Preservation HP: 48~1,058
ATK: 21~476
DEF: 27~595
Verdict
Increases the wearer's DEF by 24~40% and Effect Hit Rate by 24~40%. Increases the chance for the wearer to be attacked by enemies. When the wearer is attacked, increase their DEF by an extra 24~40% until the end of the wearer's turn.
Light Cone This Is Me!
This Is Me!
4 Stars Icon Path Preservation Medium Preservation HP: 38~846
ATK: 16~370
DEF: 24~529
New Chapter
Increases the wearer's DEF by 16~32%. Increases the DMG of the wearer when they use their Ultimate by 60~120% of the wearer's DEF. This effect only applies 1 time per enemy target during each use of the wearer's Ultimate.
Light Cone Trend of the Universal Market
Trend of the Universal Market
4 Stars Icon Path Preservation Medium Preservation HP: 48~1,058
ATK: 16~370
DEF: 18~396
A New Round of Shuffling
Increases the wearer's DEF by 16~32%. When the wearer is attacked, there is a 100~120% base chance to Burn the enemy. For each turn, the wearer deals DoT that is equal to 40~80% of the wearer's DEF for 2 turn(s).

Toggle Columns:
RarityPathStatsPassives
1 Light Cone reduce DEF of enemies:

Icon & Name Rarity Path Stats Passive
Light Cone Resolution Shines As Pearls of Sweat
Resolution Shines As Pearls of Sweat
4 Stars Icon Path Nihility Medium Nihility HP: 43~952
ATK: 21~476
DEF: 15~330
Glance Back
When the wearer hits an enemy and if the hit enemy is not already Ensnared, then there is a 60~100% base chance to Ensnare the hit enemy. Ensnared enemies' DEF decreases by 12~16% for 1 turn(s).

Toggle Columns:
RarityPathStatsPassives
6 Light Cones ignore DEF of enemies:

Icon & Name Rarity Path Stats Passive
Light Cone Baptism of Pure Thought
Baptism of Pure Thought
5 Stars Icon Path The Hunt Medium The Hunt HP: 43~952
ATK: 26~582
DEF: 24~529
Mental Training
Increases the wearer's CRIT DMG by 20~32%. For every debuff on the enemy target, the wearer's CRIT DMG dealt against this target additionally increases by 8~12%, stacking up to 3 times. When using Ultimate to attack the enemy target, the wearer receives the Disputation effect, which increases DMG dealt by 36~60% and enables their follow-up attacks to ignore 24~40% of the target's DEF. This effect lasts for 2 turns.
Light Cone I Shall Be My Own Sword
I Shall Be My Own Sword
5 Stars Icon Path Destruction Medium Destruction HP: 52~1,164
ATK: 26~582
DEF: 18~396
With This Evening Jade
Increases the wearer's CRIT DMG by 20~32%. When an ally (excluding the wearer) gets attacked or loses HP, the wearer gains 1 stack of Eclipse, up to a max of 3 stack(s). Each stack of Eclipse increases the DMG of the wearer's next attack by 14.0~24.0%. When 3 stack(s) are reached, additionally enables that attack to ignore 12~20% of the enemy's DEF. This effect will be removed after the wearer uses an attack.
Light Cone I Venture Forth to Hunt
I Venture Forth to Hunt
5 Stars Icon Path The Hunt Medium The Hunt HP: 43~952
ATK: 28~635
DEF: 21~463
Intimidation
Increases the wearer's CRIT Rate by 15~25%. When the wearer launches a follow-up attack, gains 1 stack of "Luminflux," stacking up to 2 time(s). Each stack of "Luminflux" enables the Ultimate DMG dealt by the wearer to ignore 27~39% of the target's DEF. When the wearer's turn ends, removes 1 stack of "Luminflux."
Light Cone Reforged Remembrance
Reforged Remembrance
5 Stars Icon Path Nihility Medium Nihility HP: 48~1,058
ATK: 26~582
DEF: 21~463
Crystallize
Increases the wearer's Effect Hit Rate by 40~60%. When the wearer deals DMG to an enemy inflicted with Wind Shear, Burn, Shock, or Bleed, each respectively grants 1 stack of Prophet, stacking up to 4 time(s). In a single battle, only 1 stack of Prophet can be granted for each type of DoT. Every stack of Prophet increases wearer's ATK by 5~9% and enables the DoT dealt to ignore 7.2~10.0% of the target's DEF.
Light Cone Sailing Towards a Second Life
Sailing Towards a Second Life
5 Stars Icon Path The Hunt Medium The Hunt HP: 48~1,058
ATK: 26~582
DEF: 21~463
Rough Water
Increases the wearer's Break Effect by 60~100%. The Break DMG dealt by the wearer ignores 20~32% of the target's DEF. When the wearer's Break Effect in battle is at 150% or greater, increases their SPD by 12~20%.
Light Cone Yet Hope Is Priceless
Yet Hope Is Priceless
5 Stars Icon Path Erudition Medium Erudition HP: 43~952
ATK: 26~582
DEF: 24~529
Promise
Increases the wearer's CRIT Rate by 16~28%. While the wearer is in battle, for every 20% CRIT DMG that exceeds 120%, the DMG dealt by follow-up attack increases by 12~20%. This effect can stack up to 4 time(s). When the battle starts or after the wearer uses their Basic ATK, enables the DMG dealt by Ultimate or follow-up attack to ignore 20~36% of the target's DEF, lasting for 2 turn(s).

Enemies[]

9 Enemies can reduce the DEF of an Enemy:

Enemy Tier Damage Weakness
Dreamjolt Troupe's Beyond Overcooked Dreamjolt Troupe's Beyond Overcooked Icon Elite Enemy Elite Fire FireLightningWind
Dreamjolt Troupe's Beyond Overcooked (Bug) Dreamjolt Troupe's Beyond Overcooked (Bug) Icon Elite Enemy Elite Fire FireLightningWind
Dreamjolt Troupe's Beyond Overcooked (Projection) Dreamjolt Troupe's Beyond Overcooked (Projection) Icon Elite Enemy Elite Fire FireLightningWind
Dreamjolt Troupe's Sweet Gorilla Dreamjolt Troupe's Sweet Gorilla Icon Elite Enemy Elite Ice PhysicalFireImaginary
Dreamjolt Troupe's Sweet Gorilla (Bug) Dreamjolt Troupe's Sweet Gorilla (Bug) Icon Elite Enemy Elite Ice PhysicalFireImaginary
Dreamjolt Troupe's Sweet Gorilla (Projection) Dreamjolt Troupe's Sweet Gorilla (Projection) Icon Elite Enemy Elite Ice PhysicalFireImaginary
Entranced Ingenium: Illumination Dragonfish Entranced Ingenium: Illumination Dragonfish Normal Fire PhysicalLightningImaginary
Frigid Prowler Frigid Prowler Icon Elite Enemy Elite Ice FireLightningQuantum
Frigid Prowler (Bug) Frigid Prowler (Bug) Icon Elite Enemy Elite Ice FireLightningQuantum

2 Enemies can increase the DEF of an Enemy:

Enemy Tier Damage Weakness
Abundant Ebon Deer Abundant Ebon Deer Icon Boss Enemy Boss LightningWind FireIceQuantum
Abundant Ebon Deer (Complete) Abundant Ebon Deer (Complete) Icon Boss Enemy Boss LightningWind FireIceQuantum

6 Enemies can reduce the DEF of characters:

Enemy Tier Damage Weakness
"Present Inebriated in Revelry" (Bug) "Present Inebriated in Revelry" (Bug) Icon Elite Enemy Elite LightningWind PhysicalFireImaginary
"Present Inebriated in Revelry" (Complete) "Present Inebriated in Revelry" (Complete) Icon Elite Enemy Elite LightningWind PhysicalFireImaginary
Entranced Ingenium: Illumination Dragonfish Entranced Ingenium: Illumination Dragonfish Normal Fire PhysicalLightningImaginary
Silvermane Soldier Silvermane Soldier Normal Physical WindQuantum
Svarog (Boss) Svarog Icon Boss Enemy Boss Physical FireLightningWind
Svarog (Complete) Svarog (Complete) Icon Boss Enemy Boss Physical FireLightningWind

3 Enemies can ignore the DEF of characters:

Enemy Tier Damage Weakness
"Harmonious Choir" The Great Septimus "Harmonious Choir" The Great Septimus Icon Echo of War Enemy Echo of War Imaginary FireLightningImaginary
Destruction Lotus (Phase 2) Destruction Lotus (Phase 2) Normal Lightning LightningQuantumImaginary
Destruction Lotus (Phase 3) Destruction Lotus (Phase 3) Normal Imaginary LightningQuantumImaginary

Consumables[]

There are 6 consumables:

Name Effect Type Source Recipe
Disposable Shield Disposable Shield When used, increase DEF of all allies by 15%, and Effect RES by 10% for the next battle. Defense Consumables Omni-Synthesizer Available by default
High-Tech Protective Gear High-Tech Protective Gear Upon use, increases DEF of all allies by 15% and enhances the max DMG that can be absorbed by Shields cast on allies by 18% in the next battle. Defense Consumables Omni-Synthesizer Supreme Guardian's desk in Qlipoth Fort after completion of Trailblaze Mission No Time for Me, My Friend
Inferior Protective Gear Inferior Protective Gear Upon use, immediately causes all allies to lose HP equal to 15% of their Max HP, and increases their DEF by 15% for the next battle. Defense Consumables Omni-Synthesizer Fidora
Sanctity of the Trashcan Sanctity of the Trashcan Increase DEF of all allies by 20% in the next battle. Defense Consumables Trash Cans in Administrative District
Simple Protective Gear Simple Protective Gear Increase DEF of all allies by 25% in the next battle. Defense Consumables Omni-Synthesizer Available by default
Sweet Dreams Holographic Ticket Sweet Dreams Holographic Ticket Upon use, one of the following effects will be randomly applied to all allies in the next battle: Mirror Princess Edition — DEF increases by 36%. Miss Note Edition — Max HP increases by 30%. Defense Consumables Sold by Dreamville-Themed Restaurant

Other Languages[]

LanguageOfficial Name
EnglishDEF
Chinese
(Simplified)
防御力
Chinese
(Traditional)
防禦力
Japanese防御力
Korean방어력
SpanishDEF
FrenchDÉF
RussianЗащита
ThaiDEF
VietnamesePhòng Thủ
GermanVTD
IndonesianDEF
PortugueseDEF

Change History[]

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