Ju Fufu has fundamentally shifted the meta of Zenless Zone Zero since her debut as an S-Rank Fire Stun Agent from the Yun Kui Summit. Unlike traditional stunners who focus solely on daze accumulation, Ju Fufu acts as a cornerstone for high-end crit-based teams. Her kit revolves around her robot companion, Hu Wei, and a unique scaling mechanic that converts her Attack (ATK) into massive Critical Damage buffs for the entire squad. In the current Version 2.0 ecosystem, optimizing a Ju Fufu build requires a delicate balance between raw Impact and specific ATK thresholds.

Core Mechanics and Resource Management

To master a Ju Fufu build, one must understand the interaction between Might and Momentum. These two resources dictate her field time and support capabilities.

The Role of Hu Wei and Might

Hu Wei functions as an independent combat unit. While Ju Fufu is slashing through enemies, Hu Wei automatically deals Fire DMG. Each hit generates 20 points of Might, capping at 200. The significance of Might lies in her Chain Attack: Suppressing Tiger Cauldron. When Ju Fufu is off-field and Hu Wei hits an enemy while Might is above 100, she automatically triggers an aftershock Chain Attack. This allows her to provide support and daze without consuming valuable active field time, a luxury few other stunners possess.

Momentum and the High-Speed Spin

Momentum is gained primarily through EX Special Attacks and Ultimates. This resource fuels her "Mountain King's Game" dash attack state. In this high-speed spinning state, Ju Fufu consumes 1 point of Momentum per hit to deal Fire DMG and gain 25 Might. If she has over 100 Might during this spin, she triggers a Chain Attack automatically. This loop is essential for maintaining the "Tiger's Roar" buff, which is the heart of her support value.

The Critical ATK Threshold: Why 2,800 Matters

Ju Fufu's core passive, "Fu-rocious Might," is the reason she is currently ranked as a top-tier agent. When she triggers her specific Chain Attack, all squad members gain a 10% Crit DMG increase. However, the real power comes from the scaling: for every 100 ATK Ju Fufu has above 2,800 (base), she grants an additional 5% Crit DMG, up to a maximum extra bonus of 30%.

To reach the maximum 40% Crit DMG team-wide buff, Ju Fufu needs to hit 3,400 Total ATK. This is an unusually high requirement for a Stun Agent, who typically prioritizes Impact. This dual-requirement (Impact for daze, ATK for buffs) makes her build one of the most demanding yet rewarding in the game. If your Ju Fufu build falls below 2,800 ATK, you are essentially wasting her potential as a premier offensive support.

Best W-Engines for Ju Fufu

Choosing the right W-Engine is critical for hitting her ATK goals while maintaining her primary job as a stunner.

1. Roaring Furnace (Signature S-Rank)

This is the undisputed best-in-slot. It provides a secondary stat of ATK%, which is rare for Stun engines but perfect for Ju Fufu. It increases Daze from EX Specials and provides a stacking team DMG buff when dealing Fire DMG. It solves the 3,400 ATK requirement almost by itself.

2. Hellfire Gears (Alternative S-Rank)

As Koleda's signature engine, this is a fantastic alternative, especially for players who received it during the anniversary events. It boosts Energy Regen while off-field, allowing Ju Fufu to build Momentum faster through more frequent EX Specials. The Impact boost upon using an EX Special ensures she remains a potent stunner.

3. Blazing Laurel (Niche S-Rank)

Lighter's engine is viable if you are running Ju Fufu in a dual Fire/Ice composition. It provides Crit DMG bonuses to the team, further leaning into her role as a buffer, though it offers less raw utility for her own daze output compared to Roaring Furnace.

4. Precious Fossilized Core (F2P A-Rank)

For free-to-play players, this is the gold standard. It can be purchased with Dennies and provides a massive daze boost against enemies with high HP. While it lacks the ATK% secondary stat of her signature, it ensures that she fulfills the Stun role effectively while you hunt for ATK% substats on your Drive Discs.

Drive Disc Optimization

The introduction of the "King of the Summit" set has redefined the optimal Ju Fufu build. This set was tailor-made for her mechanics.

The 4-Piece Setup: King of the Summit

  • 2-Piece Bonus: Increases Daze by 6%.
  • 4-Piece Bonus: When the character uses an EX Special or Chain Attack, all party members gain 15% Crit DMG. If the character's Crit Rate is 50% or higher, they gain an additional 15% Crit DMG for 15 seconds.

This set is non-negotiable for a high-end Ju Fufu build. Combined with her core passive, a well-geared Ju Fufu can provide a staggering 70% Crit DMG buff to the team. However, this introduces a third stat requirement: 50% Crit Rate.

The 2-Piece Complement

  • Woodpecker Electro: The best choice to help hit that 50% Crit Rate requirement. It provides a flat 8% Crit Rate boost.
  • Shockstar Disco: If you already have enough Crit Rate from substats, this 2-piece provides 6% extra Impact, ensuring faster stuns.
  • Swing Jazz: An alternative for energy-hungry rotations, providing 20% Energy Regen.

Main Stat and Substat Priority

To hit the 3,400 ATK, 50% Crit Rate, and high Impact targets, your Drive Disc main stats must be precise:

  • Partition 4: Crit Rate (To trigger the King of the Summit bonus) or ATK% (If Crit Rate is already 50%+).
  • Partition 5: ATK% (Essential for the Core Passive threshold).
  • Partition 6: Impact (Her primary function remains stunning; neglecting this makes her feel sluggish).

Substat Priority:

  1. ATK% (Until 3,400 total ATK)
  2. Crit Rate (Until 50% total)
  3. Flat ATK
  4. Crit DMG (For her own personal damage output)

Skill Leveling Priority

Resources in Zenless Zone Zero are limited, so upgrading skills in the right order is essential for an efficient Ju Fufu build.

  1. Core Skill: This is the highest priority. It directly increases the Crit DMG buff scaling and the duration of the Tiger's Roar state.
  2. Special Attack / EX Special: This is where the majority of her Daze and Momentum generation comes from.
  3. Chain Attack: Vital for her aftershock damage and the popcorn-firing mechanics in the high-speed spin.
  4. Basic Attack: Her basic attacks are strong, especially the 3rd-hit combo, but they are secondary to her EX and Chain triggers.
  5. Dodge & Assist: These provide utility and invulnerability frames but offer the lowest return on investment for daze and buffs.

Best Team Compositions for Ju Fufu

Ju Fufu is a flexible agent, but she shines brightest when paired with Attackers who scale heavily with Crit DMG.

1. The Yun Kui Powerhouse (Yixuan + Lucia/Lucy)

This is currently the most popular meta team. Ju Fufu provides the stun and massive Crit buffs, while Lucia provides additional ATK buffs or off-field Fire application. Yixuan, as the primary Rupture/Attack unit, takes full advantage of the decibel bonuses Ju Fufu provides (300 decibels per ultimate).

2. Mono-Fire Burn (Soldier 11 + Ben/Lucy)

Ju Fufu replaces Anby or Koleda in this classic lineup. She provides a more offensive slant to the team. With Ben, the team becomes incredibly tanky; with Lucy, the ATK stacking becomes absurd, allowing Soldier 11 to reach record-breaking damage numbers during the stun window.

3. F2P Friendly Synergy (Billy + Nicole)

By replacing Anby with Ju Fufu in the Cunning Hares starter team, you significantly elevate Billy's damage potential. Nicole's DEF shred combined with Ju Fufu's Crit DMG buff makes Billy's ultimate hit significantly harder during the stunned phase.

Mindscape Cinema (Talents) Analysis

If you are looking to pull for duplicates, here is a breakdown of her Mindscape Cinema:

  • M1 (Super Scary Little Tiger): Increases Crit Rate by 12% and gives 100 Might immediately. It also increases the stun damage multiplier by 35%. This is the best stopping point for low-spenders as it trivializes the 50% Crit Rate requirement.
  • M2 (Almighty Qingming Warrior): Increases team Crit DMG by another 22% during Tiger's Roar and generates Momentum when allies use Ultimates. This turns her into a top-tier support.
  • M4 (Monster-Slaying Tiger Mystic): Boosts Ju Fufu's own Crit DMG by 35%, increasing her personal DPS.
  • M6 (Roar of my Inner Tiger): Massive boost to Chain Attack damage and adds a "popcorn" projectile mechanic to her spin, dealing 160% ATK as damage per hit. At M6, Ju Fufu can essentially act as a secondary DPS.

Combat Strategy and Rotations

To get the most out of your Ju Fufu build, you cannot simply button-mash. You must play around her invulnerability frames and the 3rd hit of her basic attack.

The "Holding" Combo: During her 3rd basic attack hit, you can repeatedly press the button to maintain the strikes. This provides 40% DMG reduction and high anti-interrupt. This is her safest way to generate energy when the enemy is aggressive.

The Optimal Rotation:

  1. Start with Ju Fufu's EX Special to gain Momentum and Might.
  2. Transition into the "Mountain King's Game" spin to build Daze and trigger the first Chain Attack.
  3. Once the enemy is stunned, switch to your Support (e.g., Lucy or Nicole) to apply debuffs.
  4. Chain back into Ju Fufu's Suppressing Tiger Cauldron to refresh the "Tiger's Roar" buff.
  5. Finally, unleash your Attacker's ultimate. Because Ju Fufu's buff lasts 30 seconds, you have a generous window to execute your burst.

Final Recommendations for Your Ju Fufu Build

Building Ju Fufu is a marathon, not a sprint. Early on, focus on her Impact to ensure she can actually stun bosses. As you progress into late-game farming, slowly replace your Drive Discs with high ATK% and Crit Rate substats.

Remember the 2,800 ATK floor. If you are struggling to reach it, consider using an ATK% main stat on Partition 6 temporarily, though you should eventually aim for an Impact disc with heavy ATK% substats. With the King of the Summit set and her signature Roaring Furnace, Ju Fufu transforms from a simple tiger-eared girl into the most feared force on the battlefield, making every hit from your DPS feel like a finishing move.