This is a Jayber build for normal and hard mode in The First Descendant. Read on to learn Jayber's best builds, how to unlock, basic info, skills, as well as Jayber's exclusive equipment and skins!

Best Jayber Build for Hard Mode

Jump to a section!
Descendant Modules						Weapons and Modules
Reactor and External Components						Playstyle Tips
▼Jump to Normal Mode Build▼

Jayber Hard Mode Build Showcase

Check out how much damage Jayber can take using our high HP and DEF Hard Mode Build!

Best Jayber Modules (Hard)

More Modules can be seen by scrolling horizontally.

Boosting the Skill Power of your Non-Attribute and Dimensional Skills does affect the damage output of your turret, but it does not significantly impact the course of the fight during Void Intercept Battles. With this in mind, the main focus of this build should be to stack defensive stats to increase the durability of all your turrets and to enhance the healing capabilities of your Medical Turret. By using these modules, your HP and defense will be high enough to tank all of the boss's attacks and provide excellent healing for your team.

Modules Guide: List of Modules

Descendant Module Substitutes for Mobbing

Module Change			Explanation
Turret Engineering	>	Attacking Compulsion	Replaces Medical Turret with another Assault Turret.
Second Wind	>	Skill Simplification	increases your Skill Power Modifier but lowers your Max MP.
Iron Defense	>	Dimension Master	Improves the damage output of your Assault Turret.
Medical Support	>	Dimension Specialist	Removes HP healing in exchange for more Assault Turret damage.

For clearing mobs, you can replace your defensive and HP healing modules with more offensive ones to enhance the effectiveness of your Assault Turrets. Since enemies can drop HP consumables, you won't need to heal yourself or your team at all. Instead, you can focus on increasing the damage of your turrets to ensure that enemies die from a single shot. This way, you can defend an area with ease using your Assault Turrets, paired with Turret Engineering.

Best Jayber Weapons and Weapon Modules (Hard)

Weapon	Substat Priority
Tamer	• Bonus Firearm ATK (vs. Colossus) • Firearm ATK • Recoil • Rounds per Magazine

For this build, you will primarily use the Tamer due to its high fire rate and large magazine capacity. Since nearly all of your descendant modules will focus on increasing your defense and HP, you will be able to attack the boss continuously without worrying about dodging incoming attacks. This playstyle addresses the Tamer's main weakness: the significant decrease in movement speed for dodging.

Best Weapon Modules

More Modules can be seen by scrolling horizontally.

When using the Tamer, your main goal is to increase the Fire Rate, Firearm Attack, and Attribute attack to enhance your overall damage against enemies. Since your base Critical Hit Chance will be extremely low, you can disregard it entirely. Instead, focus on expanding your Magazine Capacity and improving Recoil stats. Do note that you can replace Electric Enhancement with other module attributes depending on the boss' weakness.

Best Weapons Tier List

Best Jayber Equipment (Hard)

Equipment	Substat Priority
Materialized Phase Reactor	• Skill Cooldown • Skill Duration Up • Skill Effect Range
HP Auxiliary Power	・Max HP ・Fire Resistance
DEF Support Sensor	・Max MP ・MP Recovery In Combat
DEF Support Memory	・DEF ・Electric Resistance
DEF Support Processor	・Max Shield ・Toxic Resistance

Note that External Components with set bonuses have fixed main stats.

For the Reactor, you can use a Materialized Phase Reactor since you will rely on your Assault Turret as a secondary source of damage. Additionally, make sure to acquire Skill Duration and Skill Range sub-stats to enhance the effectiveness of your Medical Turret.

As for the External Component, it is ideal to obtain set effect bonuses to improve the performance of the build on descendants. However, for Jayber, this is not necessary since you do not need to increase your skill power and firearm attack. It is better to simply stack HP and DEF using Support External Components, which directly increase Jayber's base stats, resulting in a significant boost to your descendant modules.

List of Reactors

List of External Components

Jayber Playstyle Tips

Jayber Playstyle Tips
Refresh Turret Duration Using Turret Engineering Do Not Stand Too Close to Your Turret

Refresh Turret Duration Using Turret Engineering

During fights, don’t wait for the turrets to expire and then re-summon them. Instead, use Turret Engineering to refresh their duration. With the right Modules, Reactor Sub-stats, and enough Skill Cooldown, you can maintain 100% uptime on your turrets using Turret Engineering.

Do Not Stand Too Close to Your Turret

Even though your turret is extremely durable, it is still recommended that you avoid standing too close to ensure at least one of you remains healthy during the boss's AOE attacks. Stay within the turret’s range to benefit from the Medical Turret’s healing, but be prepared to move away immediately if you draw the boss’s attention.

Best Jayber Builds for Normal Mode

Jump to a Section!
Descendant Modules	Weapon and Modules
Best Reactor	Best External Components
▲Jump to Hard Mode Build▲

Best Jayber Modules (Normal)

Best Jayber Modules
Mid-Air Maneuvering	Modifies the Grappling Hook to be cast mid-air. However, it can only be used once, and Charge Time increases by X %. Based on the Enhancement Level, increases Max Module Cpacity (current + X), decreases Charge Time Increase (current + X%).
Veteran's Tactics	When defeating an enemy, resets the cooldown of a random skill at a X% chance.
Spear and Shield	DEF +X%, Skill Power +X%
Time Distribution	Skill Cooldown -X%, Max HP +X%
Focus on Non-Attribute	Non-Attribute Skill Power +X%, Skill Cooldown -X%
Focus on Dimension	Dimension Skill Power Modifier +X%, Skill Cooldown -X%
Skill Expansion	Skill Effect Range +X%, applies only to certain skills for each Descendant
Increased DEF	DEF +X%
Increased HP	Max HP +X%
Nimble Fingers	Skill Cooldown -X%

With this build, you will fully utilize your Assault Turret to kill enemies and secure areas. Focus on building up Skill Power and Non-Attribute stats to boost turret damage, along with HP and Defense Modules for increased durability, as they scale with your Descendant's HP and Defense.

Including Cooldown Reduction Modules will allow you to frequently reposition your turret during missions or while defending areas. Additionally, summoning a new turret replenishes its HP, so you can use it as a tank to draw enemies away from you.

Modules Guide: List of Modules

Best Jayber Weapon and Modules (Normal)

Weapon		Stat Priority
Tamer		• Recoil • Attribute Status Effect Trigger Rate • Firearm ATK • Rounds per Magazine
Best Modules for Tamer
Firing Fiesta	When reloading, rounds are not consumed for Xs (Cooldown Xs).
Reload Expert	Reload Time Modifier +X%, Firearm ATK +X%
Stance Stabilizer	Recoil -X%, Firearm ATK +X%
Weapon Tuning	Rounds per Magazine +X%, Firearm ATK +X%
Action and Reaction	Firearm ATK +X%, Recoil +X%
Expand Weapon Charge	Rounds per Magazine +X%
Electric Enhancement	Adds Electric ATK equal to X% of Firearm ATK
Vibration Absorption	Recoil -X%
Fire Rate UP	Fire Rate +X%
Rifling Reinforcement	Firearm ATK +X%

Using this build, your weapon of choice will be the Tamer due to its High Fire Rate, which is extremely useful when dealing with large groups of enemies or against Void Intercept Battles.

Because of this, your main goal is to increase your Magazine Capacity to make your weapon more effective, especially with Attribute Status Effect. It is also highly recommended to invest in Recoil Modules to control your shots when targeting Weak Points.

Best Weapons Tier List

Best Jayber Reactor (Normal)

Reactor	Stat Priority
Materialized Phase Reactor	・Dimension Skill Power Boost Ratio ・Skill Cooldown

It is best to improve the stats and effects of your Turrets, as they are the main skills you will use throughout the fight. It is highly recommended to use a Materialized Phase Reactor since both your Assault Turret and Medical Turret are tagged as Non-Attribute and Dimension Skills. Although Multi-Purpose Gun and Reactivate can be useful, they are very situational and won't be used as much.

Reactors Guide: List of Reactors

Best Jayber External Components (Normal)

Set	Set Effect
Acrobat Set	2-Set Effect: ・Skill Power+ 1.7% Firearm ATK+2.8% 4-Set Effect: ・Firearm Critical Hit Rate +5.9% ・Skill Critical Hit Rate +21%
Substat Priority
Auxiliary Power	・Max HP ・Fire Resistance ・Kuiper Shard Drop Rate Increase Modifier ・Module Drop Rate Increase Modifier
Sensor	・Max MP ・MP Recovery In Combat ・Chill Resistance ・Consumable Drop Rate Increase Modifier
Memory	・DEF ・Electric Resistance ・Shield Recovery In Combat ・Ecive Search Radius Increase Modifier ・Firearm Proficiency Gain Modifier ・Gold Drop Rate Increase Modifier
Processor	・Max Shield ・Toxic Resistance ・Item Acquisition Distance Increase Modifier ・Ecive Display Time

You will be using the Acrobat Set to gain Skill Power and Firearm ATK Bonus for your Weapon and Turret. Additionally, it provides a small boost on the Critical Hit Rate of your Weapon and Skills.

External Components Guide

How to Unlock Jayber

Unlock Using the Research Institute

Research Time	Cost
16:00:00	400,000

Required Research Material	How to Get
Jayber Code x1	・Agna Desert (Hard) - Abyssal Void Fusion Reactor - Agna Desert Miragestone Deposit ・ Fortress (Normal) - Void Fusion Reactor - Fortress Frozen Valley ・ Sterile Land (Hard) - Abyssal Void Fusion Reactor - Sterile Land Restricted Zone ・ White-night Gulch (Hard) - Abyssal Void Fusion Reactor - White-night Gulch Observatory
Jayber Enhanced Cells x1	・Research Research Materials Needed: ・Hellion x303 ・Reverse Charging Coil x455 ・Insulated Metallic Foil x34 ・Jayber Enhanced Cells Blueprint x1
Jayber Spiral Catalyst x1	・Research Research Materials Needed: ・Flectorite x292 ・Carbon Crystal x554 ・Thermal Metallic Foil x26 ・Jayber Spiral Catalyst Blueprint x1
Jayber Stabilizer x1	・Research Research Materials Needed: ・Nanopolymers x363 ・Shape Memory Alloy x462 ・Balanced Plasma Battery x43 ・Jayber Stabilizer Blueprint x1

You can unlock Jayber through the Research Institute in Albion. Note that to acquire a Descendant using research, you need all the required items and gold to unlock this character.

Research Institute

Purchase Jayber Using Caliber

Alternatively, you can unlock Descendants by purchasing them in the Shop. This method only requires Caliber, an in-game currency that you can buy with real money. Purchasing Jayber in the Shop instantly unlocks the Descendant, allowing you to skip the item requirements and research time.

All Microtransactions

Jayber Basic Info & Stats

Jayber Basic Info
Jayber The Genius Engineer	Role	Utility Dealer
	Element	Non-Attribute
Description
"A utility-type DPS who uses turrets. Summons turrets for assault and recovery respectively. When the turrets are enhanced by multi-purpose guns, he can fight more efficiently."

Stats

DEF	Max Shield	Shield Recovery	Max MP	Max HP
2120	238	3.96	187	1009

Jayber Skills

Passive Skills

Skill	Type Effect
Turret Sync	ATK increases when assault turret and medical turret are both summoned.

Active Skills

Skill	Type Effect
Assault Turret	Dimension Summons an assault turret to attack the enemy. If enhanced, it launches attacks into nearby area.
Medical Turret	Dimension Summons a medical turret to heal allies and distract enemies. If enhanced, it restores Mana.
Multi-Purpose Gun	Singular Changes gun to a Multi-Purpose Gun. If hit by a Multi-Purpose Gun, turret enters an enhanced state.
Reactivate	Singular Recalls all summoned turrets and inflicts powerful damage to nearby enemies. After using Total Recall, you enter Overhaul state, where turrets are summoned in their enhanced states.

Jayber Exclusive Equipment

Arche-Sensitive Electronic Network System

Developed to fully utilize Jayber's ability to send and receive electronic signals using his Arche, this system is a formidable electronic warfare device designed to collect all electronic signals within the range of Jayber's Arche and relay them directly to his brainwaves, allowing his response time to be less than 0 ms. In particular, due to their unique versatility and responsiveness, dedicated turrets utilizing this system are used in various battle missions. The use of multi-purpose guns that amplify Arche signals gives him an advantage, even against large groups of Vulgus.

Jayber Skins

Jump to a Skin type!
Head	Body	Back
Chest	Ecive	Full Body
Grappling Hook	Make Up	Spawn

All Jayber Head Skins

Jayber's Deploy Neural Network	Night Vision Goggles	Nobleman
Yellow Beetle	Genius	Black Owl

All Jayber Body Skins

Jayber's Deploy Neural Network	Yellow Beetle	Genius
Black Owl	Summer Vacation

All Jayber Back Skins

Baby Panda	Ammo Supply Box	White Rabbit Doll
Bear Cub	Satellite	Albion Rocket
Planetary Projector	Rocket Jet Pack	Double Z Wing
Run, Hamster	Advanced Material Backpack	Pink Salamander
Firefighting Tank

All Jayber Chest Skins

Small Flashlight	HQ Access Card	Old Teddy Bear
Bunny-Ears Strap	Dynamite	Brave Squirrel
Emote Tag	Magister Researcher	Mark of Albion
Recorder

All Jayber Ecive Skins

Continuity	Bio Scan	Heart

All Jayber Full Body Skins

Panda's Adventure

Dinosaur Pajamas

All Jayber Grappling Hook Skins

Special Supply

Advanced Material Engineering

All Jayber Make Up Skins

Grim Reaper

Vivid

All Jayber Spawn Skins

Magical Moment	Passion	Dismantling and Fusion
Snowman	Beyond the Unknown	Thunder and Lightning
Gale	Big Water Bomb	Wrong Direction

The First Descendant Related Guides

List of All Characters

All Base Characters

Ajax	Blair	Bunny
Enzo	Esiemo	Freyna
Gley	Hailey	Jayber
Kyle	Lepic	Luna
Sharen	Valby	Viessa
Yujin	-	-

All Ultimate Characters

Ultimate Ajax	Ultimate Bunny	Ultimate Freyna
Ultimate Gley	Ultimate Lepic	Ultimate Valby
Ultimate Viessa	-	-

Character Guides

Character Guides
List of All Builds	List of All Ultimate Descendants
All Character Skins	-