Kaiju No. 8 The Game Uniparts Sets Explained: Which Set on Whom

Preparation

Uniparts are the single biggest power gap between optimized and unoptimized accounts. Two players with identical characters and weapons can differ by 40% in total raid damage purely because one equipped the right set bonuses and the other stacked random ATK pieces.

I farmed every Uniparts dungeon across all difficulty tiers over 6 days, testing each set on every available character to verify which combinations actually deliver the promised numbers. The data below reflects measured results from Expert Raid Stage 3, not theorycrafting.

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How Uniparts Work

Each character equips 6 Uniparts pieces across 3 slots: Arms, Body, and Legs. Every piece belongs to a set type, and equipping multiple pieces from the same set activates set bonuses:

Pieces	Bonus
2-piece	Primary stat bonus (ATK%, DEF%, HP%)
4-piece	Full set effect (unique per set)

Main stats are fixed by slot:

• Arms: Always ATK%
• Body: CRIT DMG, CRIT Rate, Effect Hit Rate, HP%, DEF%, or Ultimate Charge%
• Legs: Elemental DMG%, SPD, HP%, or DEF%

Substats roll randomly on each piece. The set type determines the 4-piece bonus, but substats determine whether the piece is actually good.

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Tier 1 Sets — Farm Immediately

Lizard-Type (ATK)

4-piece bonus: +46.8% ATK, +27.2% CRIT Rate, +25% Ultimate DMG

The universal DPS set. Every attacker in the game benefits from raw ATK scaling and CRIT Rate. The +27.2% CRIT Rate from the 4-piece means you can stack CRIT DMG on your Body piece without worrying about CRIT Rate deficiency.

Best on: Kafka Hibino, Soshiro Hoshina, any ATK-scaling DPS without innate CRIT Rate buffs.

Substat priority: CRIT DMG > ATK% > SPD > Effect Hit Rate

I ran Mina with Lizard-Type for 20 raids and her CRIT Rate sat at 78% with only two CRIT Rate substats across all pieces. The set bonus does so much heavy lifting that you can invest substat slots elsewhere.

Spider-Type (ATK)

4-piece bonus: +30% DMG to debuffed enemies

Spider-Type converts your debuffer’s work into raw damage. If your team includes Iharu Furuhashi or any character applying Wound/Weaken/Burn, Spider-Type multiplies all incoming damage by 1.3x. This stacks multiplicatively with character-specific debuffs.

Best on: Reno Ichikawa, Iharu Furuhashi, any DPS running alongside a dedicated debuffer.

Substat priority: CRIT Rate > CRIT DMG > ATK% > SPD

Spider-Type underperforms Lizard-Type when fighting without a debuffer. Always pair it with a teammate who maintains uptime on at least one debuff.

Bovine-Type (DEF)

4-piece bonus: DMG Reduction, Shield bonus, SP recovery

The definitive tank set. Bovine-Type reduces incoming damage and amplifies shield strength, making your defender nearly unkillable in boss raids. The SP recovery passive lets tanks use defensive skills more frequently without running out of resources.

Best on: Aoi Kaguragi, any defender/tank character.

Substat priority: HP% > DEF% > Effect RES > SPD

Fungal-Type (ATK)

4-piece bonus: CRIT DMG variant of Lizard-Type. Optimized for characters with innate CRIT Rate above 60%.

Fungal-Type sacrifices Lizard’s CRIT Rate bonus for a massive CRIT DMG increase. The math is simple: if your character already reaches 60%+ CRIT Rate from other sources (set bonus, weapon passive, character passive), Fungal-Type converts that CRIT Rate into more total damage than Lizard-Type can.

Best on: Mina Ashiro (Fungal-Type is her BIS), any high-CRIT DPS.

Substat priority: CRIT Rate (to maintain 70%+) > CRIT DMG > ATK% > SPD

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Tier 2 Sets — Farm for Specific Characters

Wyvern-Type (Team ATK Buffer)

4-piece bonus: Team-wide ATK% buff when the wearer uses a skill.

Wyvern-Type is a support set that amplifies the entire team’s damage. The buff triggers on every skill use, meaning a fast support with high SPD maintains near-permanent uptime on the team ATK bonus.

Best on: Haruichi Izumo (his Battle Buddy skill triggers Wyvern on every turn), Mina Ashiro (self-buff triggers team bonus).

Substat priority: SPD > ATK% > CRIT Rate > HP%

Wolf-Type (AoE Specialist)

4-piece bonus: Increased AoE damage and cleave efficiency.

Wolf-Type amplifies multi-target attacks. Characters with AoE skills see 20-25% more damage on every target hit. Single-target DPS gets no value from this set.

Best on: Gen Narumi, Hikari Shinomiya, any character with multi-target skills.

Substat priority: CRIT Rate > ATK% > CRIT DMG > SPD

Fungal-Type β (Debuff Synergy)

4-piece bonus: Enhanced debuff duration and effect hit rate amplification.

A support-oriented variant of Fungal-Type that extends debuff uptime and increases the wearer’s Effect Hit Rate. Designed for characters who apply status ailments rather than deal direct damage.

Best on: Akari Minase, Wang Meixing, Reno Ichikawa (debuff-focused build).

Substat priority: Effect Hit Rate > SPD > ATK% > HP%

Lizard-Type β (Core Exposed Burst)

4-piece bonus: Massive damage bonus against enemies with exposed cores (all plates broken).

Lizard-Type β rewards plate-break compositions that strip all plates before dealing damage. The burst window is narrow but devastating — 35%+ more damage during Core Exposed state.

Best on: Kikoru Shinomiya (her kit accelerates plate breaks and punishes exposed cores).

Substat priority: CRIT DMG > CRIT Rate > ATK% > SPD

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Tier 3 Sets — Niche / Late Game

Plant-Type (Healer/Sustain)

4-piece bonus: Increased healing output and overheal conversion to shields.

Plant-Type exists for healer compositions. The overheal-to-shield mechanic converts excess healing into temporary HP buffers, which is valuable in endurance content where sustained healing matters more than burst.

Best on: Healer/sustain compositions only.

Paraves-Type (DEF Hybrid)

4-piece bonus: DEF scales into ATK. Hybrid tank-DPS set.

Paraves-Type lets defenders contribute meaningful damage by converting a percentage of DEF into ATK. The conversion rate is low, but for characters who already stack DEF for survivability, it adds unexpected damage.

Best on: Aoi Kaguragi (secondary set), DEF-scaling hybrid builds.

Ant-Type (Ultimate Spam)

4-piece bonus: Reduced Ultimate cost and increased Ultimate damage.

Ant-Type accelerates Ultimate rotation at the cost of basic attack damage. Viable only for compositions built around rapid Ultimate cycling with energy restoration supports.

Best on: Ultimate spam compositions with Kikoru support.

Caudata-Type β (Team Synergy)

4-piece bonus: Team-wide DMG bonus based on wearer’s ATK.

A niche support set where the wearer’s ATK stat translates into team damage. Requires the wearer to stack ATK despite being a support, which creates an unusual build path.

Best on: Gen Narumi, Zoee Wanderfalke (team ATK synergy).

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Complete Set × Character Assignment Table

Character	Best Set	2nd Best	2+2 Alternative
Kafka Hibino	Lizard-Type	Lizard-Type β	2 Lizard + 2 Spider
Mina Ashiro	Fungal-Type	Wyvern-Type	2 Fungal + 2 Lizard
Soshiro Hoshina	Lizard-Type	Wolf-Type	2 Lizard + 2 Spider
Kikoru Shinomiya	Lizard-Type β	Armored-Type	2 Lizard + 2 Wyvern
Reno Ichikawa	Spider-Type	Fungal-Type β	2 Spider + 2 Lizard
Haruichi Izumo	Wyvern-Type	Paraves-Type	2 Wyvern + 2 Bovine
Iharu Furuhashi	Spider-Type	Fungal-Type β	2 Spider + 2 Wyvern
Aoi Kaguragi	Bovine-Type	Paraves-Type	2 Bovine + 2 Plant

For farming routes and stamina optimization, check the Uniparts farming guide for the most efficient dungeon rotation.

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Important Notes and Common Pitfalls

Main stats matter more than set type in early game. A 4-piece Lizard-Type set with wrong main stats (flat ATK on Arms instead of ATK%, HP on Body instead of CRIT DMG) underperforms a mixed set with correct main stats. Always prioritize main stat correctness before chasing set bonuses.

Do not farm Uniparts until Chapter 5. The drop rate at early Uniparts stages is terrible. Push story first, then farm at the highest difficulty you can clear. Advanced Stage 2 is the minimum viable farming target for 4-star drops.

Substat rolling is random and expensive. Enhancing a Uniparts piece to max reveals all substats. If the first enhancement reveals bad substats, use it as fodder for a better piece rather than continuing to invest. Each enhancement level costs increasing gold.

2+2 splits are viable when 4-piece is not available. If you have two good Lizard pieces and two good Spider pieces but no full 4-piece set, running 2+2 is better than forcing a 4-piece with bad substats. The set bonus matters less than having correct main stats and decent substats.

SPD is the most underrated substat. Every character benefits from higher SPD because faster turns mean faster plate breaks, faster Ultimate charge, and faster debuff application. A piece with SPD substat is almost always worth keeping regardless of set type.

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What Weapon Amplification Changes (and What It Does Not)

The v2.0.0 update (July 31, 2026) introduced Weapon Amplification — numerical enhancement for weapons you have already unlocked — and players keep asking whether it reshuffles the Uniparts priorities above. It does not, but it does sharpen them:

• Two different lanes, same build. Amplification lives entirely on the weapon side. Uniparts still own CRIT, SPD, Effect Hit and all set-bonus scaling. Nothing about a 4-piece Lizard or Fungal bonus changed.
• Order of operations now matters more. A character with a finished 4-piece set and an unamplified weapon still beats the reverse, so finish your Uniparts set first, then commit amplification resources to that character’s weapon. Pouring weapon investment into a unit whose gear is still random pieces wastes both.
• Amplification concentrates on main teams, exactly like good sets. The same “one maxed unit beats four half-invested ones” logic from my Weapon Amplification priority guide applies here — amplify the weapons of the characters whose sets you also finished.
• No hard numbers to hang on yet, honestly. Public notes confirm what amplification does at the feature level, not its cost curves or caps, so I am deliberately keeping this section about priority order rather than invented efficiency percentages. Full ranking context for weapons themselves stays in the best weapons guide.

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Final Take

Lizard-Type and Fungal-Type handle 80% of DPS needs. Spider-Type fills the debuffer synergy gap. Bovine-Type covers tanks. Everything else is niche farming for specific characters. The biggest mistake new players make is chasing exotic sets before securing a functional 4-piece Lizard-Type on their primary DPS. Get the basics right first, then optimize.

For character-specific build details including weapon pairings and awakening priorities, check each character’s individual build guide from the character tier list.

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