Duping Recommendations and Coalition Mooks

Introduction

Whether you’re a commander looking to get their echelons ready for future content or a commander who’s hoping to compete for the high spots on the ranking leaderboards, the act of duping, or raising multiple copies of the same T-Doll, is one of the oft-touted ways to help make that easier. From a gameplay standpoint, duping can offer higher return-on-investment than raising only unique T-Dolls. That being said, for most GFL content, duping is by no means mandatory, and many people choose not to dupe for various reasons.

What is duping?

Duping in Girls Frontline is, quite simply, the act of raising multiple copies of the exact same T-Doll. Every G&K T-Doll in your armoury can only be assigned to one echelon at a time, so raising additional copies beyond the first allows that unit to be used in multiple simultaneously deployed echelons.

The vast majority of content in GFL, like all story and event maps including ranking stages, allows duplicate Dolls to be used. At the time of writing, Theater is the only event in GFL that doesn’t allow for dupes to be used, both for Dolls and Fairies. Note that, at the time of writing, duping is not necessary for any content, with the sole exception of competing for the top 5 to 10 placements in so-called "modern" rankings. However, as the difficulty of fights in ranking continues to climb, duping has become far more appealing to those looking to compete in ranking at a high level.

This is based on usage statistics and performance in future rankings

G&K

HGs

P22 (1-2)

Incredibly versatile with Shields, Evasion and FP buffs to the correct targets.

Permanently farmable in Isomer campaign.

Kolibri (1-2)

Insane amount of buffs from one Doll.

Limited Doll that only shows up by dartboard.

Webley (1-2)

Massively buffs team leader with FP, RoF and CDR.

Limited Doll that only shows up by dartboard.

SAA Mod (1-2)

Consistent FP buffer with repetitive RoF buffs.

Production.

Nagant Mod (1-3)

Night FP debuffer and 0icd fp buffer.

Production, common drop.

Mk23 (1-2)

Strongest night FP buffer.

Production.

HP-35 (1-2)

At night, passive vulnerability for all enemies, Damage reduction for the entire echelon and even more vulnerability during uptime.

Production.

Zip .22 (2)

Zip offers some incredible debuffs with a 1 second ICD, slowing down the enemy and often giving enough time for the Maintank to get their Skill active before being shot at much.

Production.

P290 (1-3)

P290 is a Damage debuffing HG who also has extra utility on top of that. Her 25% Damage debuff is lower than Night specialists such as Nagant Mod's 40%, but she also offers 30% Night Vision to the entire Echelon and also stuns all High-Threat enemies once 8 units are within range. Especially the latter one can be absolutely amazing considering how annoying a lot of the High-Threat units are, for example Snytos.

Limited Doll that only shows up by dartboard.

P10c (1-4)

P10C allows you to make the entire Echelon immune to damage for a short moment with each Skill activation. Requires manual control and knowing what you're doing to make good use of.

Production.

Walker (1-3)

Makes Murats do nothing. Also has good tiles.

Production.

SMGs

Suomi Mod (2-6)

Easily the strongest SMG tank with massive shields and Damage reduction, immunity to debuffs.

Production.

G36c Mod (1-2)

Up to 24 seconds of immunity to Damage.

Production.

MPL (1-2)

Strong stacking shields.

Production.

Type64 Set (1-3)

Wish you just had free Target dummies every fight? And more of them? This is it.

Gray Zone Set.

RFs

SCAR-H (2-14)

Flat RoF buffs for allies and self. Used with SCAR-L for unity skill.

Production.

Kar98k Mod (1-2)

Does what Grape does but doesn’t have a non-elite clause. Has current target targeting.

Production.

Hanyang Mod (1-2)

Piercing attacks, extra buffs at night.

Production.

Grape (1-2)

Nukes an enemy, has a non-elite clause limiting her targets.

Production.

ARs

SCAR-L (2-14)

Dupable M4Mod, insane additive Damage buff. Needs SCAR-H due to unity skill.

Production.

Ribeyrolles Mod (1-2)

Most powerful buffs to ARs. Also increases SMG survivability.

Production.

MGs

M240L (2-6)

Parachute debuff is now a buff. Surehit, high threat targeting, Damage buffs, overpenetration bonus Damage.

Farmable in LS campaign.

MG15 (1-2)

Rain of bullets from above with Highest HP targeting.

Production.

SGs

LTLX7000 (2-6)

On activation, powercreep all existing SGs. Knocks back enemies consistently, cleanses buffs, massive Armor buff to self, also has passive Damage reduction.

Production.

M500 Mod (1-2)

Shield spam with the correct enablers.

Production.

SPAS-15 (1-3)

Massive armor and shield buffs for SGs with the right setup. Also has CDR tiles for SGs and MGs.

Production.

Nova (1-2)

Shields allied SGs or buffs MG accuracy depending on position.

Production.

FO-12 (2-3)

Eliminates one non-elite, knockback goddess.

Production.

DP-12 Mod (1-2)

Massive HP shields, scales flat armor passively as combat progresses.

Production.

TPS (2-9)

Reduces allied damage taken, 40% FP Debuff. Incredibly powerful.

Limited.

Stevens M620 (2-6)

Bunkers allow everyone to move fast, take less damage. Skill makes MGs do 50% more Damage and reload super fast.

Production.

SPAS-12 Mod (1-2)

Actually useful after Mod, allowing easier SPAS-15 use. Also has decent DPS output.

Production.

Fairies

All fairies are from production unless otherwise stated.

Parachute (2-14)

Second strongest combat aura, allows you to teleport on the map. Fwee Pawa guide.

Illumination (1-3)

Allows you to see the map at night. Enables more easy use of Parachute at night.

Also has 10% Night Vision. EN skill text is wrong, it has 2 extra nodes of vision at Skill Level 10.

Witch (1-4)

Strongest combat aura, useful Damage over time skill.

Ranking fairy from PR.

Sniper (1-2)

Max HP% Damage with 20k cap. Also applies Vulnerability to her target which increases Damage past the Damage cap.

Shield (1-2)

Applies an HP shield to echelon that buffs both Damage and Damage reduction.

Farming

Everything in this section is 1x, or 1-link unless otherwise stated. Fielding 1x units is cheaper but this is purely a brainrot level of optimization for some farming.

Vector (2)

For 13-4 farming.

Production.

M26-MASS

Rodel immunity for farming, doesn’t need flash.

Production.

Zip

1s icd massive debuffs to most notably move speed, delaying enemies significantly.

Production.

LTLX

Still does LTLX things even as 1x.

Production.

MPL

Shields, lots of shields.

Production.

Webley (2-link)

Her login SPEQ makes her immune to link-loss for 10 seconds. Should not need to explain how broken this can be for farming. Needs to be 2-link because link protection does not work for mainframe.

Limited.

Coalition

Ringleaders cannot be duped, or you’d be incentivised to have 14 Scarecrows.

Key Units

Needed for most general use

Manticore (4+)

Delays enemies, deals AoE damage, can also tank well with decent Armor and Evasion. 

Nemeum (4+)

Front-targeting ranged damage dealer. Scales with enemy HP. Middling AP, can struggle with high Armor.

Aegis SWAP (2-4)

Armor, HP Shields and Evasion. Pure tanking.

Goliath Factory (3+)

Causes enemies to shoot at reinforcement beans instead of anything more important. Extremely useful for keeping things from shooting your actual units.

Jaeger (2-4)

Backline-targeting ranged damage dealer.

Jaguar (2+)

Backline-targeting AoE damage dealer. Needs to consistently hit 2-3+ targets to be worth bringing.

Notable Units

Used for more specialized echelons

Jaws Paradise (2+)

Summer seasonal variant of Goliath Factory. Has extra utility through buffs for allies and stuns for enemies. Even better at stalling due to a slightly higher RoF.

Ripper SWAP (1-2)

Evasion tank with short duration 100% Force Shields. Surprisingly decent DPS in non-Defense mode, but has no AP.

Dragoon SWAP (3+)

Massive HP Shields, decent Evasion and does good damage.

Tarantula (4++)

Armored Dinergate, useful for melee rush comps. Can permastall some enemies due to summons.

Prowler SWAP (4++)

Applies HP Shields to all allies, buffs nearby melee units. Core to melee rush comps.Can also be used as a support for ranged comps in Defense mode.

Jaeger SWAP (2+)

Stronger Jaeger, slightly higher cost.

Gingerbread Guard (1-2)

Applies HP Shields to all Dolls based on max HP. Significantly higher Health than the regular Guard SWAP, meaning much higher HP Shields. Support unit more than tank.

Dinergate (2)

With only 2 cost, can be easily slapped into echelons to give them a bit more kiting and tanking options, also useful at breaking Orthrus Shields. Very susceptible to AoE. Can permastall some enemies due to summons.

Corpse Bride (0-1)

Small RoF buff for allies. Additional buffs for single-link Allies (Ringleaders and Manticores). Can prevent Moth Hunter debuffs on your other single-link Allies. (EN tl is wrong, she only buffs single-link allies and for 10% Damage, not 20%.)

Technically usable

In no particular order… somewhat usable units that just don’t see much actual use, keep 1 max of each.

• Striker SWAP: Random targeting, decent burst damage at the start but average in the long run. Generally not used much due to targeting. Has sticky targeting like G&K.
• Guard SWAP: Applies HP Shields to all Dolls based on own max HP. Completely outclassed by Gingerbread Guard.
• Vespid SWAP: Small RoF buff for allies. Highest HP targeting, no AP. Can debuff enemies.
• Striker: Usable as an early option, or if different targeting is required, but generally Jaegers and Jaguars are better. Has sticky targeting like G&K.

Scrap

The following are completely useless due to lack of power or significantly stronger variants being available.

• Aegis: Inferior to other Armor tanking options. Just use a Manticore or Aegis SWAP.
• Dragoon: Not worth using, just loses links.
• Brute: Has no defensive tools, which is unusable as a melee unit.
• Prowler: Inferior to Prowler SWAP in all ways. Not worth using.
• Guard: Only applies HP Shields to allies in the same column. Completely inferior to both other versions.
• Scout: Debuffs are simply not significant enough and has low DPS.
• Vespid: Inferior to both other versions. Not worth using.
• Ripper: Massively inferior to the SWAP variant. Not worth using.