Quick Answer: Knuckle Duckle is a speculative World Boss coming with Genshin's Luna I update (Version 6.0, likely September 2025). You'll find this quirky duck-shaped robot on Lempo Isle in the Nod-Krai region. The trick? Don't waste time hitting its armor directly—focus on those pesky minions it summons and use Electro-Charged or Lunar-Charged reactions to break through. It's your only source for Precision Kuuvahki Stamping Die, which both Flins and Aino desperately need for ascension.
What Makes Knuckle Duckle Special (And Why You'll Be Farming It)
It's Not Your Average World Boss
Here's the thing about Knuckle Duckle—it looks absolutely ridiculous. Picture a giant mechanical duck with four arms flailing around. But don't let the goofy appearance fool you. This 'kuuvakhi' mechanism introduces some genuinely interesting combat mechanics that'll have you rethinking your usual unga bunga approach to World Bosses.
The real kicker? You'll need 46 Precision Kuuvahki Stamping Die just to max out Flins, plus another 420,000 Mora. That's... a lot of farming ahead.
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Getting There: No Gatekeeping Here
Unlike some World Bosses that hide behind Adventure Rank walls, Knuckle Duckle's refreshingly accessible. Just reach its location and you're good to go. The only real requirement is activating that Statue of the New Moon on Lempo Isle—which you'll want to do anyway for map visibility.
Difficulty-wise? It's actually on the easier side. Two main attacks, both heavily telegraphed. The challenge isn't surviving—it's understanding the armor mechanic. More on that nightmare below.
Finding This Mechanical Menace
Navigation Made Simple
Knuckle Duckle hangs out in an open cave on Lempo Isle's southern coast. The easiest landmark? Head to that Clink-Clank Krumkake Craftshop (seriously, who names these things?) west of Nasha Town, then trek south along the coastline.
Pro tip: Once you've found it, there's a dedicated waypoint. Because nobody wants to make that walk twice.
The cave's pretty obvious once you're in the right area—it's directly across from the pier, so you really can't miss it.
Combat Breakdown: Why This Fight's Actually Clever
Phase 1: The Warm-Up
Knuckle Duckle starts simple. Two attacks, both with massive purple telegraphs that might as well have neon signs saying MOVE NOW.
Splash Attack drops a circular indicator showing exactly where pain's incoming. Charge Attack? Purple arrows pointing straight at your face. If you're getting hit by these, we need to talk about your positioning.
Phase 2: Where Things Get Spicy
Duckstruction Mode is where this boss earns its keep. Full armor bar appears, damage resistance shoots through the roof, and suddenly you're not fighting the duck anymore—you're fighting its little robot minions.
Here's where most players mess up: they keep attacking the boss. Don't. Those Stamping Devices are your real target. You can either smash them directly or—and this is the fun part—use Electro-Charged reactions to turn them against their creator. Watching converted minions attack the boss's shield never gets old.
Team Building: What Actually Works
The Elemental Game
Hydro and Electro are your best friends here. Electro-Charged reactions spread like wildfire among grouped enemies, and the new Lunar-Charged reaction (basically Electro-Charged's cooler sibling) can flip minions to your side.
Team Compositions That Don't Suck
The Flins Special: Flins, Ineffa, Yelan, Kokomi. Built around Lunar-Charged synergy—assuming you pull Flins, of course.
The Reliable Option: Raiden Shogun, Kazuha, Yelan, Furina. Electro-Charged consistency with crowd control. This one's my personal favorite—editor's bias showing here.
Budget Build: Fischl and Barbara. Not glamorous, but it works. Sometimes simple is better.
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Character Spotlight: Who Shines Here
The Standouts
Flins is obviously designed for this fight. That signature weapon's loaded with goodies: 22.1% CRIT Rate, 36% Lunar-Charged damage boost, plus energy restoration. It's almost unfair.
Raiden Shogun remains the consistent choice. Off-field Electro application, energy for the team, and that burst damage during stun phases.
Neuvillette might surprise you—those charged attacks absolutely demolish the boss during armor-break windows.
Loot and Rewards: What You're Really Here For
The Drop Table Reality Check
Every clear guarantees the usual suspects: Adventure EXP, Mora, friendship points, and Vajrada Amethyst materials. The real prize is that Precision Kuuvahki Stamping Die, but RNG's gonna RNG.
You'll also see 5-star Gladiator's and Wanderer's pieces. Not exciting, but decent fodder for the artifact strongbox.
40 resin per run, regardless of World Level. Plan accordingly.
Farming Strategy: Making It Efficient
The Weekly Grind
Here's my approach: hit Knuckle Duckle first (highest resin cost), then chain other Nod-Krai activities. Budget 3-4 weekly clears minimum for decent Stamping Die progress, but honestly? RNG might demand more.
The 40 resin cost stings, especially when you're also farming domains for artifacts. Balance is key—don't neglect your current roster for future characters.
Pro Tips and Common Pitfalls
What Works (And What Doesn't)
Smart plays: Position early for phase transitions. Stack Elemental Mastery on your reaction enablers. Save your biggest damage for post-armor stun windows.
Rookie mistakes: Attacking the shielded boss directly (seriously, stop this). Poor positioning during those massive telegraphs. Running out of energy mid-rotation because you didn't plan ahead.
The armor phase transition catches a lot of players off-guard. Be ready for it.
FAQ
Where exactly is this thing hiding? Nod-Krai region, Lempo Isle, inside a cave south of the Clink-Clank Krumkake Craftshop. From Nasha Town, go northwest to the shop, then south to the coast. Can't miss the cave entrance.
How do I actually break that armor? Two ways: smash the minions directly, or use Electro-Charged/Lunar-Charged reactions to convert them into allies. The reaction method's way more efficient and honestly more fun to watch.
How much farming am I looking at? 46 Stamping Dies for Flins alone, plus 420k Mora. Aino needs them too. With RNG drops, you're looking at weeks of farming. Welcome to Genshin.
Best team for this fight? Depends on your roster. Flins/Ineffa/Yelan/Kokomi if you're going all-in on Lunar-Charged. Raiden/Kazuha/Yelan/Furina for reliable Electro-Charged. Budget option: Fischl/Barbara and patience.
Is 40 resin worth it? If you're building Flins or Aino? Absolutely. It's literally the only source for their ascension material. Plus you get Electro gems and artifacts as bonus. Skip it if you're not planning to pull these characters.
When's this actually releasing? Speculation points to Luna I update, possibly Version 6.0 around September 2025. Take that with a grain of salt—it's based on leaks and community theories, not official word from HoYoverse.