Gilgamesh Ultimate Build Guide For Honkai Star Rail
Gilgamesh has officially debuted in Honkai: Star Rail as a 5-star Destruction unit wielding Lightning DMG. His gameplay style centers around accumulating “Interest” stacks to lock into an upgraded permanent stance, allowing him to endlessly cast his Skill while bypassing enemy defense and unleashing devastating area-of-effect damage. Whether you are currently wishing on his banner or stockpiling enhancement resources ahead of time, this guide breaks down everything required to optimize Gilgamesh.
For additional character breakdowns and patch notes, head over to the Honkai: Star Rail knowledge base on GenshinBuilds.
Gilgamesh Optimal Setup Overview
- Top Light Cone: I Am As You Behold (Signature)
- Top Relic Set: Scholar Lost in Erudition
- Top Planar Ornament: Cosmic Life Sciences Institute
- Primary Stats: CRIT Rate / ATK / Lightning DMG or ATK / ATK
- Sub-stats Priority: CRIT Rate > CRIT DMG > ATK%
- Trace Priority: Skill > Ultimate > Talent > Basic ATK
- Eidolon Milestone Order: E1 > E6 > E2 > E4
Since Gilgamesh naturally accrues Speed via his Interest mechanic, ATK boots outclass Speed boots. Furthermore, his massive 360 Energy ceiling makes the Cosmic Life Sciences Institute set an unbeatable choice for a flat 32% damage increase.
Abilities and Mechanics Breakdown
Gilgamesh starts combat relying on standard attacks until he reaches 10 Interest stacks, triggering the Interest Piqued! mode for the remainder of the encounter. Each stack grants a 10% Speed bonus. Once active, he is restricted to his Skill, which strips away a percentage of target defense for three turns and inflicts Lightning damage to both the primary target and adjacent foes.
Generating Interest Stacks
- Teammate turns: Grants 1 stack per ally action
- Technique usage: Grants 3 initial stacks
- Ultimate activations: Grants 2 stacks per party member’s Ultimate while restoring Energy based on consumption
- Coordinated Follow-up with Saber: Grants 3 stacks
Every single stack also awards 25% CRIT DMG, capping out at 6 stacks. While casting his Skill consumes the accumulated Interest stacks, the permanent enhanced mode remains active.
Coordinated Follow-up Attacks
Whenever either Gilgamesh or Saber attacks, a counter ticks upward. Reaching 8 total hits triggers a dual follow-up attack against all adversaries, which regenerates Saber’s Energy and supercharges her upcoming Ultimate. Consequently, Saber functions as a premier teammate to elevate Gilgamesh’s overall damage output.
Passive Traits
- King’s Burden: Allies casting their Ultimates grant Gilgamesh enhanced Ultimate damage for three turns.
- Party Buff: While active on the field, all party members receive a 20% boost to ATK and CRIT DMG. Additionally, every point of Max Energy exceeding 140 grants an extra 1% to both ATK and CRIT DMG, scaling up to a 100% bonus. This heavily rewards high-capacity teammates like Saber and Huohuo.
Top Light Cones for Gilgamesh
| Light Cone | Why It Excels |
|---|---|
| I Am As You Behold (5★) | Signature weapon – grants +18% ATK, +10% Energy Regeneration, and +72% Ultimate DMG. Post-Ultimate, grants the party +24% CRIT DMG. |
| A Thankless Coronation (5★) | Saber’s signature – delivers +36% CRIT DMG, +80% ATK following an Ultimate for 2 turns, alongside a 10% Energy refund. |
| On the Fall of an Aeon (5★ F2P) | Rank 5 yields +64% ATK after four attacks and +24% DMG post-Weakness break. An exceptional free-to-play option. |
| A Trail of Bygone Blood (4★) | Battle Pass option – improves CRIT Rate, Skill damage, and Ultimate output. Conditional yet potent. |
| Under the Blue Sky (4★) | Rank 5 supplies +32% ATK and +24% CRIT Rate upon defeating an enemy. Ideal for early-game progression. |
For players dedicated to a free-to-play approach, On the Fall of an Aeon obtainable from the Simulated Universe is the most practical choice. Adventurers utilizing the Battle Pass will find A Trail of Bygone Blood to be a worthwhile enhancement.
Recommended Relics and Planar Ornaments
Relic Sets
- Scholar Lost in Erudition (4-Piece): Provides +8% CRIT Rate, +20% Skill DMG, and +20% Ultimate DMG. After launching an Ultimate, the subsequent Skill deals 25% increased damage—ideal for his spam-heavy rotation.
- Band of Sizzling Thunder (4-Piece): Offers +10% Lightning DMG and a permanent +20% ATK buff after utilizing a Skill (maintained indefinitely by casting it every turn). A reliable substitute if Scholar pieces are unavailable.
Planar Ornaments
- Cosmic Life Sciences Institute (2-Piece): Reaching the 360 Energy threshold grants Gilgamesh an unconditional 32% damage bonus. No alternative set rivals this payout.
Main Stat Guidelines
- Body: CRIT Rate (or CRIT DMG if sufficient CRIT Rate comes from sub-stats)
- Feet: ATK%
- Planar Sphere: Lightning DMG Boost > ATK%
- Link Rope: ATK%
Sub-stat Focus Order
- CRIT Rate (targeting roughly 70%+)
- CRIT DMG
- ATK%
Ideal Team Compositions
Gilgamesh’s kit thrives alongside high-energy companions and frequent Ultimate cycles. A premier team setup features:
- Gilgamesh (Primary DPS)
- Saber (Sub-DPS / Follow-up Facilitator)
- Mortenax Blade (Offensive Support)
- Huohuo (Sustain / Energy Battery)
Mortenax Blade delivers substantial ATK and CRIT DMG enhancements, though maintaining high uptime demands steady Energy generation. Huohuo’s Ultimate recovers 20% of maximum Energy, synergizing flawlessly with Gilgamesh’s 360 cap and Saber’s large pool, while simultaneously providing healing and debuff cleansing.
Commanders lacking Saber can substitute her with other high-energy utility units like Tingyun (noting that her flat Energy restore is less impactful here) or Ruan Mei. Budget-friendly alternatives include Asta for Speed and ATK buffs, alongside defensive options like Natasha or Lynx.
For more squad suggestions, explore our guides on Rin Tohsaka Best Teams and the Mortenax Blade Best Build.
Key Eidolons for Gilgamesh
| Eidolon | Ability Effect | Priority Level |
|---|---|---|
| E1 – He Who Saw the Deep | Skill defense ignore extends to teammates; grants +60% ATK; Skill restores 40 flat Energy. | Highest |
| E2 – Wisdom That Encompassed All | Initiates battle with 5 Interest; Ultimates supply 5 additional stacks; Skill multipliers jump by +100% on primary and +50% on adjacent targets. | High |
| E4 – King Who Bowed to None | Grants +20% Energy Regeneration. | Medium |
| E6 – Soul That Bore Friendship | Boosts Ultimate bounce damage by +80%; adds 20% All-Type RES PEN; Golden Rule stacks grant +100% CRIT DMG each. | High |
Eidolon 1 stands out as the most game-changing upgrade, transforming Gilgamesh into a party-wide defense shredder while smoothing out his Energy economy. Eidolon 6 massively scales his burst potential, though it requires a heavy investment.
Frequently Asked Questions
Q: Does Gilgamesh require an Energy Regeneration link rope?A: Generally, no. Because of his 360 Energy requirement, external battery sources from allies like Huohuo or Saber’s Light Cone prove far more efficient. An ATK rope yields superior damage output.
Q: Is it possible to run Gilgamesh without Saber?A: Absolutely, though you forfeit the dual follow-up attack synergy. He remains a formidable hypercarry when backed by standard support options.
Q: Are Speed boots ever preferable to ATK boots?A: Never. His intrinsic Interest stacks supply more than enough Speed to hit necessary action breakpoints, making ATK boots the optimal choice.
Conclusion
Gilgamesh functions as an independent, devastating damage dealer who thrives in compositions centered around rapid Ultimate rotation. Utilizing his optimal setup—featuring I Am As You Behold, Scholar Lost in Erudition, and Cosmic Life Sciences Institute—maximizes his active Skill and Ultimate potential while his passive aura elevates the entire squad. Prioritize offensive stats like CRIT and ATK, and pair him alongside Saber and Huohuo to unlock his ultimate potential.
For additional Honkai: Star Rail character setups and meta breakdowns, continue following updates on the Honkai: Star Rail strategy hub.