Cissia Best Build Guide: W-Engines, Drive Discs, Team Comps | ZZZ 2.7

Zenless Zone Zero (ZZZ) 2.7 is turning heads with Cissia—an Electric DPS who doesn’t just hit hard, but also makes your whole squad’s damage feel “weirdly higher” when you play her loop right. If you’re here to figure out how to build her fast, what teams actually click, and where she shines in real endgame, this guide is your no-fluff, Reddit-brain version: practical priorities, clean rotations, and choices that don’t waste your resources.

Cissia Overview

Rarity: S-Rank   |   Element: Electric   |   Class: Attack

Cissia’s game plan is simple: tag targets with Venom Mark, stock Venom, then let Serpent’s Venom Burst do the “set-and-forget” damage while your squad keeps swinging. Her basic string refreshes the Mark, and her dive-style charged hit is the big cash-out—spending Serpent’s Swiftness stacks for extra punch, then instantly draining remaining Venom to force extra Burst procs.

What makes her more than “just another Electric DPS” is the team value: marked enemies take Electric/Physical hits with DEF ignore that scales harder the more Energy Regen you build, plus her Ultimate opens an Ether Veil crit-damage window for everyone. She shines in Shiyu Defense boss floors and Hollow Zero wave rooms—anywhere long uptime and repeatable procs beat one-and-done stun bursts. She slots best beside Electric or Physical carries that love a persistent debuff engine.

 

Key Mechanics & Features

Venom Mark + Serpent’s Venom Burst uptime
Cissia’s whole game is “mark first, profit forever.” A bunch of her buttons tag enemies with Venom Mark, then she builds Venom and lets it auto-consume in combat to fire Serpent’s Venom Burst on a steady rhythm. The spicy part: while that Venom loop is running, your squad’s Electric + Physical hits vs marked targets ignore DEF, and it scales harder the more Energy Regen you stack—so her build and rotations naturally push team damage, not just her own.

Serpent’s Swiftness + “manual cash-out” dives
Each Serpent’s Venom Burst also feeds Serpent’s Swiftness, and that’s your “ammo” for her Charged Attack: you spend stacks to supercharge a lock-on dive, steer the landing, and—if she’s on-field—she’ll rapidly burn remaining Venom to chain more Bursts. Translation: you can hold Venom for buff uptime, then dump it on demand right before your team’s big damage moment.

Ether Veil: Serpent’s Eye + EX hold fuel loop
Her Ultimate doesn’t just smack—it reapplies Mark, refills Venom, and opens Ether Veil: Serpent’s Eye for a teamwide CRIT DMG window (refreshing it replaces the old one). Meanwhile her EX Special can be held to spend extra Energy for extra strikes, which also generates more Venom and snaps you straight into the next Basic string for fast re-marking. In practice, she’s a clean “buff-window driver” for boss phases and longer fights: keep Mark up, keep Veil up, keep DEF-ignore rolling.

 

Skill Level-up Priority

Core Skill	⭐⭐⭐⭐⭐ (Top)
Basic Attack	⭐⭐⭐⭐⭐ (High)
Special Attack	⭐⭐⭐⭐ (Medium)
Chain Attack	⭐⭐⭐ (Medium)
Dodge	⭐⭐ (Low)
Assist	⭐ (Low)

Start with Core Skill — this is where her real value scales: more reliable Venom uptime + stronger “mark payoff” for the whole squad. Since her kit literally turns Energy Regen into extra team damage via DEF-ignoring pressure on marked targets, Core levels are the cleanest “my carry hits harder” upgrade.

Next, level Basic Attack — not because you’re married to the 4-hit string, but because it’s her most repeatable Mark + Venom generator, and it also houses the stack-spending dive that force-dumps Venom for rapid Bursts when you need a cash-out right now. This is the part you’ll press the most in real fights.

Then invest in Special Attack — it’s your rotation glue: fast, safe tagging to keep the mark online, and the EX version is her quickest “load the tank” button so you enter every DPS window already stocked. Higher levels make your setups feel less scuffed and more mark → load → swap/commit.

After that, Chain Attack — big damage, plus a clean Mark refresh + Venom refill, and since Ultimate lives here too, you’re also upgrading the button that opens her team CRIT DMG Ether Veil window. Great value, just not as “every rotation” as the first three.

Assist next — useful as an emergency re-tag + defensive tempo stabilizer, but it’s not what determines your core gameplan consistency.
Dodge last — great for staying alive, minimal impact on what she adds to the team compared to Core/Special/Basic.

 

Key Materials

Shock Chip 25/75/250

Attack Certification Seal 4/32/30

Exuvia of Refinement 9

Higher Dimensional Data: Bloodstained Miasma Feather 60

Cissia’s kit is all about keeping that mark loop online — so don’t let upgrade mats be the thing that stalls your damage. For the full farming list, best stages, and a quick priority checklist, hop into our complete Cissia Materials guide!

 

Best Drive Discs Set

4-Piece Drive Discs Selection

Woodpecker Electro	2-Piece Set: CRIT Rate +8% 4-Piece Set: Landing a critical hit on an enemy with a Basic Attack, Dodge Counter, or EX Special Attack increases the equipper's ATK by 9% for 6s. The buff duration for different skills are calculated separately.
Woodpecker Electro is basically built for Cissia’s “hit a lot, keep pressure” Main DPS loop. She’s constantly landing crit-eligible hits with her basics, dodge counters, and EX button, so the set converts that natural rhythm into rolling ATK uptime. The extra CRIT Rate also makes her periodic Venom damage feel way more consistent.
Hormone Punk	2-Piece Set: ATK +10% 4-Piece Set: Upon becoming the active character in combat, the equipper's ATK increases by 25% for 10s. This effect can trigger once every 20s.
Hormone Punk fits Cissia when you play her as a bursty “swap in, cash out, rotate” Sub DPS. The instant ATK spike on entry lines up with her best damage moments (when you dump stored resources and force rapid procs), and the flat ATK boost is always useful. If you hard-camp her nonstop, it’s still fine—just less optimized.

 

2-Piece Drive Discs Selection

Thunder Metal	2-Piece Set: Electric DMG +10%
Electric DMG% is the cleanest multiplier for her entire kit: every strike, proc, and burst cash-out scales with it. If she’s your main DPS, this is always-on value right away.
Puffer Electro	2-Piece Set: PEN Ratio +8%
PEN Ratio shines when enemies get tanky. She hits often and repeatedly, so penetration applies to a huge share of her damage, making bosses/elites melt more consistently in practice too.
Swing Jazz	2-Piece Set: Energy Regen +20%
More energy means more frequent big-button cycles, cleaner uptime, and faster reloading of her resource loop. Since her kit rewards ER scaling, it double-dips nicely.

 

Drive Discs Best Stats

Main Stats

Slot 4	CRIT Rate / CRIT DMG >> ATK%
Slot 5	Electric DMG = PEN Ratio >> ATK%
Slot 6	Energy Regen >> ATK%

Slot 4–5 are your “make every hit matter” slots: Cissia’s damage comes in lots of repeatable hits plus periodic procs, so CRIT + Electric DMG scales basically her whole output. Slot 6 is the flex: ATK% is raw, always-on DPS, while Energy Regen is a real damage stat for her because her kit converts higher ER into more DEF ignore vs marked targets (for her and the team).

Sub Stats

CRIT Rate / CRIT DMG	⭐⭐⭐⭐⭐ (Top)
ATK%	⭐⭐⭐⭐ (High)
Energy Regen / PEN Ratio	⭐⭐⭐ (Mid)

CRIT is king because it stabilizes her “constant pressure” damage profile. ATK% is the clean next layer. After that, pick your flavor: Energy Regen until your mark uptime + DEF-ignore scaling feels comfy, then PEN for chunkier boss/elite damage when defenses start to matter.

 

Best W-Engine

Cissia Signature W-Engine

Rarity: ⭐⭐⭐⭐⭐    Base ATK: 713    Energy Regen: 60%

Increases CRIT Rate by 20%/23%/26%/29%/32%. When the equipper consumes at least 20 Energy in a single instance, for every 20 Energy consumed, gain a buff for 3s: Ignore 30%/34.5%/39%/43.5%/48% of the target's DEF when dealing Electric DMG. Gaining this buff again extends the duration, up to a maximum of 30s. When entering Assist state, gain this buff for 10s. When the equipper is not the active character on-field, the buff duration does not decrease.

Her signature W-Engine matches Cissia’s damage loop because she’s always dumping energy to keep her mark engine rolling and to force rapid burst procs. Whenever she spends a chunk of energy, the weapon converts that into penetration for her Electric hits—exactly what a DPS wants against bosses. The buff “freezes” while she’s off-field and starts on Assist entry, so quick swaps don’t waste uptime, and crit keeps output consistent.

 

Alternative W-Engine

Severed Innocence (S-Rank)	Best near-signature damage engine. Her loop alternates Basics and Specials to tag targets, then pop the mark, so the stacking CRIT DMG buff ramps fast and stays up. Max stacks add extra Electric punch always.
The Brimstone (S-Rank)	Best generalist S-rank. It stacks ATK by landing Basics/Dash/Dodge hits, and Cissia is always pressing buttons to keep marks and burst pops flowing. You ramp quickly, keep the buff through fights, and never feel offline.
Cannon Rotor (A-Rank)	Budget MVP: Cannon Rotor gives CRIT Rate plus a bonus hit on criticals. Her kit throws lots of fast hits and frequent pop-damage, so crits happen often—meaning the extra proc comes up basically on cooldown.

 

Pull recommendation

Low Budget (M1+S0)
M1 is the “fix her startup” breakpoint: you enter with more [Venom] ready, her Core Passive DEF-ignore package gets noticeably juicier, and she can force a Quick Assist prompt off her big buttons or a fully-charged [Serpent’s Swiftness] spend. Translation: faster ramp, cleaner rotations, and way less “waiting to become a character.”

Mid Budget (M1+S1)
S1 is pure comfort + DPS glue: it rewards how often she dumps Energy for burst turns, then keeps the payoff rolling even when she’s not on-field. That pairs stupidly well with her kit’s “mark → build stacks → cash out” rhythm, because your big windows hit harder and stay consistent through swaps.

Standard Budget (M2+S1)
This is the “competitive” tier. M2 adds extra punch into high-res/high-tank fights by pushing Electric damage through defenses, and it feeds her Decibels off her kit’s repeatable burst triggers, so Ult cycles stop feeling RNG-y and start feeling scheduled.

High Budget (M4+S1)
M4 turns her into a combo accountant: your big actions stock [Venomous Fang], then your cash-out converts those stacks into extra [Serpent’s Venom Burst] hits without spending [Venom]. More procs, bigger dumps, less resource anxiety.

Unlimited Budget (M6+S1 / M6+S5)
M6 is the stun-window bully upgrade: extra [Venom] injections specifically when the enemy is Stunned, plus a straight boost to her charged cash-out damage. If you live for “stun → delete HP,” this is the luxury finish.

 

Best Team Comp

Cissia	Seed	Rina
		Trigger
		Astra Yao

Cissia + Seed are a two-person EX engine. Cissia keeps Venom Mark up and converts it into squadwide Electric/Physical DEF-ignore, so Seed’s Electric damage feels like a free armor skip. Seed then names the highest-ATK attacker as Vanguard and trades EXs for shared ATK/CRIT DMG buffs—built for snappy swap bursts.

Rina is the clean glue pick: she sends Drusilla/Anastella out, and while they’re attacking your whole squad inherits a chunk of her PEN Ratio. That stacks nicely with Cissia’s DEF-ignore mark, and it’s low field-time—so Cissia/Seed can keep their EX cadence instead of babysitting buffs.

Trigger turns the duo’s hit spam into faster Stuns and nastier payoffs. She builds Purge, then your active character’s attacks can proc her Aftershocks, boosting the target’s Stun DMG Multiplier even outside Stun. Two Electric attackers trigger tons of procs, and every Stun window becomes a cleaner delete cycle.

Astra Yao is your “set the stage” amplifier. She enters Idyllic Cadenza to raise all squad damage, and that universal buff doesn’t care who’s on-screen. While Cissia and Seed ping-pong swaps and dump Energy into EXs, Astra’s always-on amp keeps the rotation chunky with almost zero extra homework.

 

Conclusion

Cissia rewards one thing: consistent rhythm. When your setup stays tight, her damage stops being “bursty” and becomes this steady pressure that melts elites and bosses without begging for perfect RNG. Dial in the build, pick teammates that keep her cycle smooth, and you’ll feel the difference immediately.

And if you’re grabbing Cissia (or her gear) in ZZZ 2.7, topping up ZZZ via LDShop can be a nice quality-of-life shortcut—quick, convenient, and it helps you get back to actually playing instead of doing banner math.