Gate of Babylon Open: Ultimate HSR Gilgamesh Build Guide

Bow before the King! Master the explosive, high-energy mechanics of Honkai: Star Rail's newest Lightning Destruction powerhouse with our definitive Gilgamesh build guide. Uncover his DEF-ignoring kit, Saber synergy, and top Light Cone options.

👑 The Vanguard of Babylon: Gilgamesh Profile

The cosmic scales of Honkai: Star Rail are buckling under the weight of pure, unadulterated royalty! Arriving as the premier crown jewel of the highly anticipated Honkai: Star Rail x Fate/stay night [Unlimited Blade Works] collaboration event on July 24, 2026, the King of Heroes himself, Gilgamesh, officially joins the roster.

Stepping onto the galactic stage as a 5-Star Lightning character following the path of The Destruction, Gilgamesh is engineered from the ground up to operate as a high-scaling, area-of-effect hypercarry. Rather than fighting simple turn-by-turn skirmishes, he actively demands that his entire team bows to his whim—harnessing the combat actions and Ultimate bursts of his allies to feed his specialized Interest metric. Once his curiosity is piqued, he hijacks the turn order, triggers devastating DEF-ignoring Cleaves, and unloads apocalyptic orbital strikes that completely dismantle high-tier content.

📊 Skill Kit: The Sovereign’s Judgment

Gilgamesh boasts a self-advancing, multi-layered kit that turns traditional energy restrictions completely on their head.

• Basic ATK (Halfhearted Blow): Deals single-target Lightning DMG equal to 100% of his ATK. Automatically fired off at the start of his turn natively—because the King rarely bothers to exert manual effort.

• Skill (King's Treasure): Instantly invokes King’s Acknowledgement, allowing all of his outgoing damage to cleanly ignore 30% of the target's DEF for 3 turns. Simultaneously strikes a main target for 200% ATK damage while raining 100% splash damage down on adjacent foes.

• Ultimate (Enuma Elish): Discharges an unprecedented, screen-clearing 400% ATK AoE Lightning strike to all active hostiles. To ensure absolute obliteration, the weapon system automatically fires 10 additional randomized single-target bounce strikes for 40% ATK damage each. This relies on a staggering, unique maximum energy threshold of 600.

• Talent ("Amuse Me to the Fullest"): Every time a companion unleashes their Ultimate, Gilgamesh accumulates King's Burden, scaling his personal Ultimate damage output by 40% per stack (lasting 3 turns). Furthermore, whenever an ally target takes any action, Gilgamesh gains 1 point of Interest. Upon hitting 10 points, he immediately consumes the stack to advance his action forward by 100%. The first time this hits in a cycle, he enters the Interest Piqued! state, forcing his next action to deploy his devastating enhanced Skill.

• The Saber Resonance ("I Grant You Permission To Strike"): If the legendary Saber accumulates 3 attacks while sharing his squad, Gilgamesh effortlessly triggers a monumental Joint Follow-Up Attack. This fires off a simultaneous 400% ATK Lightning strike and a massive 600% ATK Wind strike to all enemies, instantly refunding 3 Interest points to Gilgamesh, restoring a massive 200 fixed Energy to Saber, and advancing her action forward by 50%.

🌌 Traces & Ascension Architecture

Unlocking his major trace nodes introduces extreme high-energy synergies that completely reward high-cost team compositions:

• Epic's Opening: When a teammate unloads their Ultimate, Gilgamesh instantly siphons 3 Interest points while smoothly regenerating an astronomical 80% of the flat energy consumed by that ally's burst.

• Hero's Hauteur: Grants a specialized maximum Energy overflow bank of up to 120 points. Upon deploying his Ultimate, the overflow bank is entirely cleared to immediately restore an identical chunk of baseline energy right back into his pool. Furthermore, every point of Interest gained provides a stacking 10% CRIT DMG buff (capping at 12 stacks).

• Hegemon's Strife: Provides a passive, field-wide aura that scales all allies' ATK by 30% and CRIT DMG by 30%. If an ally's Max Energy profile natively exceeds 100 points, every single excess point scales this baseline buff by an additional 1% (capping out at a massive 100% bonus pool).

⚔️ Signature Arsenal: I Am As You Behold

To perfectly optimize his extreme 600-energy cap mechanics, pulling his 5-star signature Light Cone, I Am As You Behold, is a top-tier priority.

At its baseline level, this Destruction asset offers exceptional stat distribution and carries the highly specialized At Will trait. It provides a flat 18% ATK increase and a permanent 10% Energy Regeneration Rate boost. More importantly, when the wearer unleashes their Ultimate, it scales the damage output of that specific nuke by 10% of the total Energy consumed (up to a massive 60% damage scaling ceiling). Additionally, entering combat or firing his Ultimate grants the King's Entertainment aura for 3 turns, boosting all active allies' CRIT DMG by 25% automatically.

⛓️ Eidolon Breakdowns: Vault of the Treasury

For dedicated collectors preparing to invest beyond a baseline copy, Gilgamesh's Eidolon array completely breaks open traditional team performance barriers:

• E1 (He Who Saw the Deep): The 30% DEF-ignore trait from his King’s Acknowledgement skill now applies universally to your entire team. Additionally, it layers a flat 25% ATK boost to Gilgamesh and restores 60 fixed energy the next time he casts his Skill after an Interest proc.

• E2 (Wisdom That Encompassed All): Instantly grants 8 points of Interest upon entering combat and feeds him 6 free points whenever his Ultimate triggers. It also jacks up his core Skill multipliers by 30% on the main target and 20% on blast targets.

• E4 (King Who Bowed to None): Flatly increases his baseline Energy Regeneration Rate by a substantial 20%.

• E6 (Soul That Bore Friendship): Boosts his Ultimate's random bounce damage multiplier by 20% and provides a permanent 20% All-Type RES PEN aura to all teammates. Additionally, it tracks ally Ultimate uses to build up to 5 points of Golden Rule, forcing an autonomous, catastrophic activation of Enuma Elish at max stacks.

👥 Top-Tier Team Compositions

Gilgamesh acts as an absolute anchor for characters possessing exceptionally high energy thresholds or rapid action-cycling profiles.

1. The Legendary Fate Duo (Saber Synergy Meta)

• Gilgamesh + Saber + Robin + Aventurine

This is his premier, high-efficiency setup. Saber behaves as his ultimate companion; her high-frequency multi-attacks continuously feed their specialized Joint Follow-Up loop, which instantly refills her energy reserves and loops his Interest counters perfectly. Robin acts as the definitive Harmony companion, utilizing her team-wide action advance to instantly maximize Gilgamesh's Interest gain cycles while benefiting heavily from the massive stat scaling granted by his Hegemon's Strife passive. Aventurine locks down your team safety with thick stacks of shields while throwing in extra follow-up attacks to keep the Interest engine spinning.

2. The High-Energy Hypercarry Setup

• Gilgamesh + Tingyun + Huohua + Sparkle (or Jiaoqiu)

An absolute battery configuration built entirely around letting Gilgamesh loop his 600-energy ultimate as quickly as humanly possible. Tingyun and Huohua continuously inject raw energy pools into his system, triggering his Epic's Opening trace constantly. Sparkle manipulates the turn order seamlessly to force his Interest Piqued! Skill bursts, while providing the extra Skill Points required to maintain an aggressive, non-stop offensive rotation.

🚀 Accelerate Your Journey

Honkai: Star Rail anchors the early progression of the update, especially for players investing in new characters. Trainers aiming to accelerate ascension farming can explore trusted Honkai Star Rail Accounts, optimize resin/stamina efficiency with expert Honkai Star Rail Hourly Services, or secure consistent boss clears through reliable Honkai Star Rail Boosting as farming rotations intensify.

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