Siku Build Guide — Goddess Order

Last updated: September 24, 2026

Siku Build Guide collects build notes, tier position, skills, stats, teams, and related Goddess Order guides.

Siku

Resolve of Frostbite

SSR

Water

Breaker Honor

Luna's soulmate. A Breaker created for Water team. Siku can buff Barrier, increase Water DMG and enemy DMG Taken in Broken state. She relies on her Enhanced state to deal DMG and break enemy.

PVE Performance

S+

PVP Performance

Duplicate Priority

Mandatory

U1 - U3

Recommended

U3 - U5

Good To Have

U1 allows Siku to enter Enhanced state right at the start of the battle, and can stay in Enhanced state longer. U3 improves her debuffs. U5 increases her DMG output and Break Power. In U5, Siku can infinitely spam one [E.Basic Skill] into [E.Special] as long as she has enough [Permafrost Cold]. Using <Counter> and <Hold Skill> inbetween will sustain it.

Build Recommendations

Mandatory

Relics

Inherited Courage and Forgiveness

Totem of the Owl's Wisdom

Horn of the Bitter Cold

Accessories

Necklace of Vipers Earrings of Interruption

Spell Infusions

2x Burning Deer

2x Viridian Marksman

4x Burning Deer

Recommended

Relics

Flame Dragon's Hammer

Golden Laurel of the Ancient Hero

Accessories

Ring of Composure

Spell Infusions

4x Ebony Lion

4x Viridian Marksman

2x Lion-Headed Knight

2x Burning Deer

2x Winged Wolf

2x Viridian Marksman

4x Winged Wolf

Good To Have

Relics

Golden Blossom of the Priestess

Accessories

Ring of Reversal Necklace of Will Earrings of Resolve

Spell Infusions

4x Lion-Headed Knight

Armor Stats Priority

Mandatory

ATK%Break DMG%ATK Up on P.Dodge or ParryATK Up if HP above 75%

Recommend

HP%DEF%DMG Taken DownDMG Taken Down when HitWater DMGCRIT%ATK Up on Switch SkillATK

Good To Have

C.DMG%

Unlocks

U1

Gains 100% [Permafrost Cold] at the start of the battle.
Reduces the amount of [Permafrost Cold] consumed by [Enhanced Basic Attack] and [Enhanced Special Skill] by 20% and the amount of [Permafrost Cold] consumed by [Well-fed Agloo] by 30%.

U3

Increases Water DMG Taken Increase from [Bittercold Wound] to 25% and DMG Taken Increase while Broken to 50%.

U5

Dealing DMG with [Enhanced Basic Skill] resets [Enhanced Special Skill] cooldown.
Increases [Enhanced Basic Skill] and [Enhanced Special Skill] DMG by 25% and Break DMG by 25%.

Synergy

Provides

BarrierWater DMG AmpBroken DMG AmpHealing

Needs

Synergize well with Water units. Prefer unit that can active Solidarity Skill.

Basic Information

Name

Siku

A.K.A.

Resolve of Frostbite

Role

Breaker

Element

Water

Principle

Honor

Gear Category

Light Armor

Rarity

SSR

Weapon

Melee / Ice

Allegiance

kingdom of Kaplan

Faction

Snowfield Recon Squad

Birthday

Nov. 3

Relic

Inherited Courage and Forgiveness

Intro

A young girl of the Khinu tribe, the indigenous people who lived among the perpetual snow at the border of Wikhatt, Brittia, and Kaplan. Wikhatt had oppressed the Khinu people many times before, but during an unprecedented large-scale attack, her village was burned down and most of the villagers were slaughtered. Siku managed to flee toward the Kaplan border with a few surviving children, but was nearly caught by Wikhatt pursuers until she was rescued by Gilbert Winterguard. Afterwards, Siku became Gilbert's aide, waiting for a chance to take revenge on Wikhatt... though somehow she also ended up playing a big role in waiting for a chance to take revenge on Wikhatt... though somehow she also ended up playing a big role in exaggerating Gilbert's accomplishments.

Solidarity Skill

When paired with a knight of the same element or a Slayer knight, Siku's [Break DMG] increases by 15%. If [Well-fed Agloo] is active, [Break DMG] increases by 10%.