4-Star (Free)
Lightning
The Destruction
C Tier
Lightning
The DestructionThe inarticulate head of Herta Space Station's Security Department. Arlan is a berserker-style Lightning DPS who consumes his own HP instead of Skill Points to deal damage, gaining up to 72% bonus DMG from his Talent when at low health, but requires heavy shielder support to survive.
Arlan
Security Department Head / Herta Space StationBest Light Cone
On the Fall of an Aeon
Best Relic Set
Scholar Lost in Erudition 4pc
Planar Set
Rutilant Arena
Requirement
Shielder Mandatory
Best Partner
Skills
Basic
Lightning Rush
Deals Lightning DMG to a single target. A straightforward attack used when Arlan needs to preserve his already-low HP rather than spending more with his Skill.
100%
of ATK
Skill
Shackle Breaker
Consumes 15% of Arlan's Max HP to deal Lightning DMG to a single enemy. Costs no Skill Points. If Arlan lacks sufficient HP, his HP is set to 1. He can then continue using this Skill at no further cost. His primary damage tool.
240%
of ATK
Ultimate
Frenzied Punishment
Deals Lightning DMG to a single enemy and Lightning DMG to adjacent enemies (Blast). Costs 110 Energy. At E6 and below 50% HP, the adjacent damage multiplier equals the primary target multiplier, turning this into a potent 3-target AoE attack.
320%
primary target
Talent
Pain and Anger
Arlan gains bonus DMG for every percent of HP below his Max HP, up to a maximum of 72% more DMG. This is the reward for staying at low HP values. At 1 HP, the full bonus is always active but requires a shielder to keep Arlan alive.
72%
max DMG bonus
Technique
Swift Harvest
Immediately attacks the enemy. After entering battle, deals Lightning DMG equal to 80% of ATK to all enemies. A useful wave-opener that softens groups before Arlan begins his single-target rotation.
80%
AoE on enter
Build Targets
Relic Main Stats
Head
HP (fixed)
Hands
ATK (fixed)
Body
CRIT Rate
or CRIT DMG
Feet
Speed
or ATK%
Planar Sphere
Lightning DMG
or ATK%
Link Rope
ATK%
Stat Targets
Substat Priority
01
CRIT Rate / CRIT DMG
balance 1:2
02
ATK%
scales all hits
03
Speed
more turns
04
Break Effect
toughness bar
Skill Upgrade Order
Skill
1st
Ult
2nd
Talent
3rd
Basic
Last
Skill is the main damage source and HP cost happens regardless of level, so leveling it is always worth it. Ultimate gains notable multiplier increases at each level. Talent improves the HP-damage conversion cap. Basic is low priority.
Best Light Cones
#1
On the Fall of an Aeon (S5)
Best-in-slot from Herta's Store. Stacks up to 64% ATK over 4 attacks and adds 24% DMG bonus when breaking enemy Weakness. Assumes you maintain full attack stacks at all times, which Arlan does easily via his constant Skill spam.
#2
The Unreachable Side
Strong limited alternative. Provides CRIT Rate, Max HP bonus, and a 40% DMG increase when attacked or when consuming own HP, both of which trigger constantly in Arlan's kit. Excellent synergy if you own it.
#3
A Secret Vow (S5)
Free-to-play option from Stellar Warp. Provides flat DMG increase plus extra DMG when Arlan's HP is lower than the enemy's, practically always true since Arlan operates at 1 HP. At S5, the synergy is excellent for a free light cone.
#4
Something Irreplaceable
Increases ATK by up to 40% and restores HP when defeating an enemy or getting hit, also granting a 40% DMG buff. The HP restore on hit has minor anti-synergy with wanting low HP, but the sheer raw stats make it viable.
#5
I Shall Be My Own Sword
Limited 5-star Destruction cone. Its mechanics center on ally deaths and Eclipse stacks, which do not align naturally with Arlan's playstyle, but the raw stats still offer a modest damage ceiling.
Best Relics
Cavern Sets
1
Scholar Lost in Erudition
Best-in-slot cavern set for Arlan. The 4-piece grants 8% CRIT Rate, increases Skill and Ultimate DMG by 20%, and after using Ultimate additionally boosts the next Skill by 25%. This aligns perfectly with Arlan's rotation of Skill spam into the occasional Ultimate burst.
2
Band of Sizzling Thunder
Strong Lightning-focused alternative. The 2-piece provides 10% Lightning DMG and the 4-piece boosts ATK by 20% for 1 turn after using Skill. Since Arlan uses his Skill almost every turn, the ATK window is very consistent.
3
Longevous Disciple
The 4-piece grants stacking CRIT Rate (up to 16%) whenever Arlan is hit or consumes his own HP, both of which happen every turn. Useful if you have well-rolled pieces and want to ease CRIT Rate requirements.
Planar Ornament Sets
1
Rutilant Arena
Best planar set. Provides 8% CRIT Rate and when CRIT Rate reaches 70% or higher, Basic ATK and Skill DMG increase by 20%. Since Arlan's main damage comes from Skill spam, hitting the 70% threshold unlocks significant extra output. Aim for it with Scholar to stack CRIT easily.
2
Firmament Frontline: Glamoth
Provides 12% ATK and up to 18% more DMG at 160 SPD. A strong planar if you are running a high-speed Arlan build and meeting the 135 or 160 SPD threshold consistently.
3
Inert Salsotto
Provides 8% CRIT Rate and 15% Ultimate and follow-up attack DMG when CRIT Rate is 50% or higher. Useful if you do not meet Rutilant Arena's 70% CRIT Rate threshold and want a CRIT-stacking planar with Ultimate bonus payoff.
Best Teams for Arlan
Arlan's core requirement is a shielder. Without strong shields he will die instantly at 1 HP. Aventurine and Gepard are mandatory considerations. Bronya and Sparkle pair naturally since Arlan never consumes Skill Points, letting them operate entirely Skill Point Negative.
01 · Premium
Best-in-slot composition
Aventurine provides the strongest shields in the game, keeping Arlan permanently alive at low HP. Dan Heng IL buffs Arlan's damage significantly while also offering shield uptime. Sunday drives action economy and action advances Arlan for more turns.
02 · Bronya Variant
Skill Point Negative synergy
Arlan never generates Skill Point costs, so Sparkle can freely play Skill Point Negative without the team ever running dry. Gepard provides reliable shields. Pela's DEF shred amplifies Arlan's damage significantly. Note: Bronya's action advance can deplete shields before they refresh. Prefer Sparkle here.
03 · Gepard Budget
4-star accessible composition
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Eidolons
E
1
To the Bitter End
When HP percentage is 50% or lower, increases DMG dealt by Skill by 10%. Since Arlan operates at 1 HP in optimal gameplay, this is a permanent passive bonus on his primary damage source.
Passive Bonus
E
2
Breaking Free
Using Skill or Ultimate removes 1 debuff from Arlan. Practically useful for clearing ATK down debuffs or Guardian Shadow's Bans. Does nothing against crowd control since you need to act to trigger it.
Utility
E
3
Power Through
Skill Lv. +2 (max 15) and Basic ATK Lv. +1 (max 10). The Skill level increase is the important part. Higher Skill levels provide meaningful damage multiplier gains on his primary source of output.
Damage Bump
E
4
Turn the Tables
When struck by a killing blow after entering battle, instead of going down, Arlan restores HP to 25% of Max HP. However, this effect only lasts for the first 2 turns after battle starts, so at endgame it rarely triggers in a meaningful window.
Situational
E
5
Hammer and Tongs
Ultimate Lv. +2 (max 15) and Talent Lv. +2 (max 15). The Talent level increase raises the maximum HP-to-DMG conversion cap. Combined with E3's Skill boost, Arlan's total damage output at E5 climbs noticeably.
Solid Upgrade
E
6
Self-Sacrifice
When HP drops to 50% or below, Ultimate deals 20% more DMG and the adjacent target multiplier is raised to equal the primary target multiplier. This transforms his Ultimate into a 320% ATK hit on 3 targets, a massive AoE spike. Simulation data shows approximately 41% more damage in 3-target scenarios at E6 versus E0.
Major AoE Upgrade
Major Traces
Revival
Ascension 2
If Arlan's current HP percentage is 30% or lower when he defeats an enemy, immediately restores HP equal to 20% of Max HP. This is Arlan's only in-kit HP recovery, making it critical for sustaining his low-HP playstyle during fights with waves of weaker enemies.
Endurance
Ascension 4
The chance to resist DoT Debuffs increases by 50%. Only applies at the initial application of the debuff. It does nothing if you are already afflicted. Helpful passive for avoiding Burn, Bleed, or Shock that could kill Arlan at 1 HP.
Repel
Ascension 6
Upon entering battle, if Arlan's HP is 50% or lower, he can nullify all DMG received except for DoT until after he is first attacked. A damage barrier on entry, theoretically powerful, but in endgame content it is rarely possible to enter with sub-50% HP since the Technique does not consume HP.
+28%
ATK
+18%
Effect RES
+10%
Max HP
Upgrade Materials
Extinguished Core / Glimmering Core / Squirming Core
Character Ascension
Shattered Blade
Trace Material
Lightning Crown of the Past Shadow
Boss Drop
Destroyer's Final Road
Weekly Boss Drop
Frequently Asked Questions
Yes, absolutely. Arlan operates optimally at 1 HP to maximize his Talent's 72% DMG bonus. At 1 HP, a single unshielded hit from any enemy in endgame content will kill him instantly. Aventurine is the best partner due to his massive shield output and CRIT DMG amplification. Gepard is the best accessible alternative. Without a shielder, Arlan cannot function in the way his kit intends.
Each time Arlan uses his Skill, he consumes 15% of his Max HP. If he has insufficient HP (less than 15% remaining), using the Skill sets his HP to exactly 1. He does not die. Once at 1 HP, he can continue using Skill freely at no additional HP cost. This means Arlan quickly reaches his ideal state of permanent 1 HP after a few Skill uses at the start of any fight, provided his shielder has shields ready.
Sparkle is excellent for Arlan. Since Arlan never spends Skill Points (his Skill costs HP, not SP), Sparkle can always play Skill Point Negative without the team running dry, maintaining her own buff uptime freely. Bronya also works in theory, but her Action Advance on Arlan can cause him to act before the shielder refreshes shields, potentially creating lethal situations. Prefer Sparkle or Sunday over Bronya specifically for Arlan.
Arlan can clear endgame content at high investment, particularly at E6 where his Ultimate becomes a powerful 3-target AoE. However, the effort and resources required to make him function well generally exceed what you would spend on other 4-star or 5-star DPS characters who deliver comparable or better results with fewer team constraints. Arlan's C Tier placement reflects that he is outclassed not because his numbers are terrible, but because his survivability requirements impose heavy team-building costs that hurt your overall output.
134 SPD is the general recommended breakpoint for solid action economy in endgame. However, be cautious: a faster Arlan burns through his shielder's coverage faster. Make sure your shielder is also fast enough to reapply shields before Arlan takes a hit at 1 HP. At 143 SPD, Arlan gains an extra turn per cycle compared to standard enemies. Prioritize CRIT stats before pushing speed.
E1 is a free passive 10% Skill DMG boost that is always active. E3 and E5 provide meaningful level increases to Skill, Ultimate, and Talent. E6 is genuinely notable: it transforms his Ultimate into a 3-target AoE equal to the primary target multiplier, which simulation data shows as a significant damage increase especially in multi-target scenarios. Since Arlan is a free 4-star, his eidolons are obtainable through standard banners over time, making E6 realistically achievable without heavy pulling investment.
