Zenless Zone Zero · Progression guide

ZZZ Jane Doe W-Engine Guide: Sharpened Stinger vs Weeping Gemini

Weeping Gemini can give Jane a large Proficiency bonus after the squad has applied Anomalies. Sharpened Stinger can instead bring its buildup bonus into the opening. The question to test is whether the A-Rank engine still gives you the Assaults you need before the enemy recovers.

Quick answer · Our advice

Try the A-Rank engine if Jane already fits the required Assault into the stun window. Compare the first stun and the next opening separately. Stinger can be worth more when its full-stack buildup fits a proc Gemini misses. Gemini’s Proficiency is useful only once the team has earned stacks and they are still active.[1][2][5][6]

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By GachaLootGuide reviewed November 9, 2026

Version 3.3 context. Compares a level-60 Phase 1 Sharpened Stinger with a level-60 Phase 5 Weeping Gemini. Match Jane’s Mindscape and Potential setup in both tests.

What changes when Jane swaps her signature for Weeping Gemini?

Sharpened Stinger at Phase 1 gives 12% Physical DMG per Predatory Instinct stack, for 36% at three stacks. At maximum stacks it also grants 40% Anomaly Buildup Rate. The engine grants three stacks on entering combat or triggering a Perfect Dodge. Eligible Dash Attacks can build or refresh the effect.[1]

Weeping Gemini at Phase 5 grants 48 Anomaly Proficiency per qualifying squad Anomaly, up to four stacks. Its tooltip says the effect expires when the target recovers from stun or is defeated. The engine has an ATK% advanced stat, while Stinger has Anomaly Proficiency. Comparing the passives alone misses that difference.[2][3][1]

Our suggested checks

Swipe across the table to see all columns.

What changes when Jane swaps her signature for Weeping Gemini? comparison
Test moment	Stinger check	Gemini check
The first useful hit	Did the opening grant full stacks and are they still active?	Which Anomalies has the squad already inflicted?
Jane enters the stun window	Will full-stack buildup last until the important hit?	How many stacks are actually active before buildup?
The enemy recovers or a target dies	Can the next sequence refresh the effect?	Recount stacks on the next target or cycle
Both engines fit the same Assault	Compare actual damage and team timing	Compare actual damage with the stacks the team can repeat

References[1][2][5]

Worked example where the signature fits one earlier Assault

Worked example · GachaLoot calculation

Only four equivalent buildup actions fit before the enemy recovers

Assumptions

Use a normalized 100-unit Physical gauge starting empty, with no teammate buildup. In this example each of the five eligible actions has the same base contribution of 21. Both builds use the same Mastery and target modifiers.
There are no other buildup-rate bonuses in this simplified example. Stinger stays at three stacks. The fourth hit lands at 6.2 seconds, the fifth at 8.0, and the target recovers at 7.0. No trigger lockout applies.

Gemini buildup after four actions4 × 21 = 84 units, below the trigger
Stinger buildup after three actions3 × 21 × 1.40 = 88.2 units, below the trigger
Stinger buildup through the fourth action4 × 21 × 1.40 = 117.6 units before applying the gauge threshold
Gemini buildup on the fifth action5 × 21 = 105 units, after recovery
Stinger’s timing margin in this model7.0 − 6.2 = 0.8 seconds inside the stun

Result: Here Stinger changes when Assault lands. Before spending, test whether your Gemini rotation can move a useful attack earlier or start stun with some Physical buildup already banked. If you change the setup, compare the full sequence on both engines.

Limits of this example: Gauge units, equal action values and timestamps are invented. This isolates Stinger’s stated full-stack buildup factor with no competing bonuses. Real actions have different values, and shared gauges, resistance and later procs need their own measurements.

Mechanic references[1][2][6]

Worked example where Gemini loses its stack advantage between stuns

Worked example · GachaLoot calculation

Three qualifying Anomalies before Jane builds, then a clean reset

Assumptions

The first test segment has three Gemini stacks already active when Jane starts building the relevant gauge. She shows 250 AP from other sources in both segments. In the second segment the first target has recovered and all three stacks from it have expired.
No new stack has been earned at the start of the second segment. Jane’s other stats and buff state are unchanged for this comparison.

Engine bonus at three stacks3 × 48 = 144 Anomaly Proficiency
Proficiency at the start of the first segment250 + 144 = 394 AP
Proficiency at the start after the reset250 + 0 × 48 = 250 AP
Bonus at the stated four-stack cap4 × 48 = 192 AP only while all four stacks are active

Result: Use the stack count Jane actually carries into each segment. Do not grade the first Assault or every later cycle as if it began at the four-stack cap. Record which qualifying Anomalies arrive before her buildup and which stacks remain when the rotation restarts.

Limits of this example: This is a buff-budget example. It does not specify whether the proc that grants a stack benefits from that same stack, or predict final Assault damage from AP alone. Note the exact timing of buildup, buffs and enemy recovery in your own run.

Mechanic references[2][3][6]

How to test both W-Engines on the same Jane

Our advice: Pick a target and a repeatable opening. Record the Agent’s Potential, Mindscape, skill levels and Drive Discs. Match engine levels and note the real refinement phases. Keep the team, target phase and support timing constant while you isolate the swap.
Our advice: Record the timestamp for first Assault, stun recovery and the next Assault. Write down the active stacks at each point. Repeat the test through at least one recovery to catch the Gemini reset and check if Stinger’s full-stack effect stays up.
Our advice: Check the attacks that actually count for Predatory Instinct in your setup. Jane’s Potential changes which actions can act as Dash Attacks or trigger Perfect Dodge. Keep the same Potential in both builds, then retest if you change it.[5][1]
Our advice: Use one fixed cutoff for damage and include any extra setup time. If both engines reach your goal, keeping the A-Rank engine can preserve Polychromes for another use. If one build consistently misses a required proc, investigate what would fix it before investing.

Our suggested checks

Swipe across the table to see all columns.

How to test both W-Engines on the same Jane comparison
Replay measurement	Stinger	Gemini
First Assault	Time and full-stack status	Time and existing AP stack count
Enemy recovery	Did the key Assault land before recovery?	Did the key Assault land before recovery?
Next-cycle start	Active stacks and available refresh	Remaining stacks and expected new Anomalies
Shared damage cutoff	Team damage and key skill usage	Team damage and key skill usage

References[1][2][5][6]

Jane Doe W-Engine questions

Can Weeping Gemini replace Sharpened Stinger on Jane?

Our advice: It is a credible A-Rank alternative. Check whether it keeps the Assault count and timing you need on the actual target. Its stack timing and the signature’s buildup bonus can produce different results across rotations.[1][2][5]

Where can I get more copies of Weeping Gemini?

Our advice: The item catalogue lists Box Galaxy. Check the shop and your own stock before using Signal Search for refinement copies. Test the phase you already own if you are deciding whether to spend more.[4]

Does Weeping Gemini’s Proficiency fill the gauge faster?

Its documented passive grants Anomaly Proficiency. The ordinary buildup model uses Mastery and buildup modifiers. More Proficiency by itself does not substitute for Stinger’s full-stack buildup bonus.[2][1][6]

Does Jane’s signature need a Dodge Counter for every stack?

The engine has several triggers. Entering combat or triggering Perfect Dodge grants three stacks, and eligible Dash Attacks can contribute. Check how Jane’s current Potential affects the actions you use.[1][5]

Should I compare only one stun window?

Our advice: Compare the first and at least one later window. Rebuilding stacks after recovery can change which engine gives the more useful rotation.[2][1]

Sources and review scope

The engine references reproduce the item descriptions and phase values. Prydwen documents Jane’s Potential-related changes to attacks and dodges. The timing, buildup and damage samples are original illustrations, with no live runs or universal DPS gap claimed. Version context comes from the official 3.3 notice.

Review dates describe this article and its references, not hands-on testing of a game account. Passages marked “Our advice” are GachaLoot’s recommendations. Check the current kit, challenge rules and upgrade preview for your own account.

[1] Sharpened Stinger — effect and phase values
ZenlessDB — game item data · Checked November 9, 2026
Phase 1 Physical DMG stacks, full-stack buildup, trigger conditions and stat line.
[2] Weeping Gemini — effect and phase values
ZenlessDB — game item data · Checked November 9, 2026
Four-stack limit, 48 AP per Phase 5 stack and expiration when the target recovers or is defeated.
[3] Weeping Gemini — released client entry
Gachabase — Version 2.8.0 game data · Checked November 9, 2026
Level-60 ATK stat and the wording of the trigger and expiry. The Phase 5 number is corroborated by the separate phase table.
[4] Weeping Gemini — acquisition
Zenless Zone Zero Wiki — indexed item reference · Checked November 9, 2026
Box Galaxy as a listed source. Current prices and inventory are checked in the shop.
[5] Jane Doe — kit, Potential and W-Engines
Prydwen — independent Agent mechanics reference · Checked November 9, 2026
Potential interactions with Dash Attacks and Perfect Dodge and the qualitative engine comparison. Published usage and damage rankings are outside this guide’s scope.
[6] Anomaly mechanics, Version 1.2
17173 — original community mechanics analysis · 波波獭, 新都快讯攻略组 · Checked November 9, 2026
The distinction between the buildup and damage models. Exact sample gauges and timestamps are original.
[7] Journey to the Sky, Version 3.3
HoYoverse — official update notice · Checked November 9, 2026
Version context. The article does not assume that Sharpened Stinger is on a current channel.

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