Xenoblade Chronicles 3

Machine Assassin Class Guide: Best Arts and Skills

Machine Assassin is a type of Attacker class in Xenoblade Chronicles 3 and is the default class of Segiri. Read on to learn more about the class, including its best arts, skills, characters, accessories, and gems, as well as find out how to unlock the class.

Machine Assassin Class Overview

Machine Assassin Basic Information

Class Role Default Character
Machine AssassinMachine Assassin Attacker ImageAttacker SegiriSegiri
Attack Defense Health Support
A C D A
Description
An Attacker who hounds foes with debuffs, then fells them at their most vulnerable with dual axes.

Character Class Rating

Noah Mio Eunie
A C B
Taion Lanz Sena
B D S

Class Rating is the speed at which each character ranks up an individual class, so the lower their Class Rating, the slower it takes for them to rank up the class.

How to Unlock Machine Assassin

Recruit Segiri by Completing Their Hero Quest

Machine Assassin is the default class of Segiri, a hero in Xenoblade Chronicles 3. To unlock this class and equip it to your main characters, you must first complete their Hero Quest: Inhumanity.

Inhumanity Walkthrough

Complete Invisible Bond to Unlock Rank 20

After you unlock this class, it will have a rank cap of 10, so you are unable to upgrade its Arts and skills further than that rank. To break the rank cap and extend the limit up to Rank 20, you must first complete the quest Invisible Bond.

Invisible Bond Walkthrough

Best Machine Assassin Characters

Recommended Characters
SenaSena EunieEunie

Characters with high Attack that also make excellent Support characters like Sena and Eunie are best for Machine Assassins. Having decently high Dexterity is also a preferred attribute as it allows them to land more of their attacks.

Best Machine Assassin Arts

Recommended Combat Arts

Art Attack Type AoE Base Effect
Fatal BiteFatal Bite Physical Attack One Target Boosts damage dealt when attacking from the side by 100%.
Terror OnslaughtTerror Onslaught Physical Attack One Target Inflicts Resistance Down when Art hits enemy rear.
Havoc SlayerHavoc Slayer Physical Attack Frontward AOE When an attack hits, spreads target's debuffs to other enemies in range.

The Machine Assassin class focuses on inflicting debuffs on your enemies to increase your damage and to aid your allies in taking them down. The more debuffs you can inflict on more enemies, the better.

For recommended Combat Arts, Terror Onslaught is the preferred debuff-inflicting Art while Havoc Slayer can spread it around to all enemies in the area. Fatal Bite is a strong attack which you can use to inflict the most damage to enemies.

Recommended Master Arts

Rank 1 and 10 Master Arts

Art Base Effect Class Rank
Maximum VoltageMaximum Voltage Unblockable / Atk. Up
Rank 10
Spearpoint ThrustSpearpoint Thrust Bind
Rank 10
No Love LostNo Love Lost Physical Def. down
Rank 1

Since Machine Assassins excel at inflicting and spreading debuffs on enemies, the best Master Arts add more debuff-inflicting Arts to their arsenal. Maximum Voltage is also recommended to increase your damage and ensure that your enemies do not block your debuffs.

Rank 20 Master Arts

Art Base Effect Class Rank
Sword of ValorSword of Valor Damage link
Rank 20
Empyrean SalvoEmpyrean Salvo AOE / Blaze / Awakened+
Rank 20

Though the Talent Art of this class already excels at inflicting debuffs on your opponents, the debuffs inflicted are random. If you would rather inflict a specific debuff on enemies, Damage Link from Sword of Valor or Blaze from Emyrean Salvo work best.

Best Master Skills for Machine Assassin Builds

Rank 5 Master Skills

Skill Effect Class Rank
Fighting ProwessFighting Prowess Boosts damage dealt by physical Arts by 30%.
Rank 5
Sappy-Sappy Drain!Sappy-Sappy Drain! Increase success rate of debuff effects by 15 percentage points.
Rank 5
Greatest WarriorGreatest Warrior Boosts damage by 25% for each enemy in battle. (Maximum is 200%)
Rank 5

Sappy-Sappy Drain! is the most important Master Skill for Machine Assassins to increase the success rate of their debuffs. Fighting Prowess is also recommended since most of the Arts in this class are Physical Attacks.

Rank 15 Master Skills

Skill Effect Class Rank
Covert AttackCovert Attack Reduces aggro generated from attacks by 20%.
Rank 15

It is recommended to keep most of the Rank 5 Master Skills listed above since they work best for the class. However, Covert Attack is a Rank 15 Master Skill that can replace one of the skills above in order to help reduce aggro.

Best Accessories for Machine Assassin Builds

Master Arts will be Pre-charged Increased Damage from the Side Boosted Aggro Reduction when Targeted
Wind BraceletWind Bracelet Bronze GauntletBronze Gauntlet Repulsor CuffsRepulsor Cuffs

Pre-charging your Master Arts is recommended to get some early debuffs on your opponent while they are unprepared. We recommend positioning your character to the side or rear of the enemy to make the most of their Arts, so an accessory that increases certain Positional damage is also ideal.

List of Accessories

Best Gems for Machine Assassin Builds

Boosted Debuff Power Extended Debuff Duration Increased Attack Damage
Swelling Scourge ISwelling Scourge Refined Incantation IRefined Incantation Steelcleaver ISteelcleaver

Machine Assassins rely on debuffing their opponents to deal the most amount of damage and assist the rest of the team. Gems that increase the effectiveness of these debuffs are best for this class, and a boost in Attack is never a bad choice for Attackers.

All Gems and Their Effects

List of Machine Assassin Arts

Talent Arts

Base Art Information
Viral VectorViral Vector Area of Effect AOE on Target Power Multiplier 500%
Buff/ Debuff - Reaction None
Recharge Type Role Action Recharge Recharge Gauge 4
Effect Applies 1 randomly chosen debuff(s) when Art hits.

Combat Arts

Base Art Information
Tyrant CrossTyrant Cross Area of Effect One Target Power Multiplier 180%
Buff/ Debuff - Reaction None
Recharge Type Time Recharge Recharge Gauge 35s
Effect Applies 1 randomly chosen debuff(s) when Art hits.
Fatal BiteFatal Bite Area of Effect One Target Power Multiplier 200%
Buff/ Debuff - Reaction None
Recharge Type Time Recharge Recharge Gauge 20s
Effect Boosts damage dealt when attacking from the side by 100%.
Terror OnslaughtTerror Onslaught Area of Effect One Target Power Multiplier 200%
Buff/ Debuff Resistance Down Reaction None
Recharge Type Time Recharge Recharge Gauge 26s
Effect Inflicts Resistance Down when Art hits enemy rear.
Havoc SlayerHavoc Slayer Area of Effect Frontward AOE Power Multiplier 300%
Buff/ Debuff - Reaction None
Recharge Type Time Recharge Recharge Gauge 35s
Effect When an attack hits, spreads target's debuffs to other enemies in range.
Mega CrescentMega Crescent Area of Effect One Target Power Multiplier 120%
Buff/ Debuff - Reaction None
Recharge Type Time Recharge Recharge Gauge 11s
Effect Extends debuff effect duration by 10% when Art hits.

Master Arts

Art Rank Mastered
Tyrant CrossTyrant Cross 1
Fatal BiteFatal Bite 10
Viral VectorViral Vector 20

Hero-Exclusive Arts

Base Art Information
Fury ReaperFury Reaper Area of Effect Frontward AOE Power Multiplier 360%
Buff/ Debuff - Reaction None
Recharge Type Time Recharge Recharge Gauge 26s
Effect When an attack hits, spreads target's debuffs to other enemies in range.
Seventh EdgeSeventh Edge Area of Effect One Target Power Multiplier 260%
Buff/ Debuff Resistance Down Reaction None
Recharge Type Time Recharge Recharge Gauge 23s
Effect Inflicts Resistance Down when Art hits enemy rear.
Hundred ShellsHundred Shells Area of Effect One Target Power Multiplier 140%
Buff/ Debuff - Reaction None
Recharge Type Time Recharge Recharge Gauge 11s
Effect Extends debuff effect duration by 15% when Art hits.

Arts Guide: List of All Arts and Effects

List of Machine Assassin Skills

Class Skills

Skill Base Effect
Chaos ChainChaos Chain Debuffing an enemy boosts damage dealt by 20% (up to a maximum of 150%)
Phantom StrikePhantom Strike Adds 60% chance for attack to be unblockable.
Cursed EdgeCursed Edge Boosts damage dealt by 50% when attacking a debuffed enemy.
Anti-Erosion SystemAnti-Erosion System Grants 30% resistance to all debuffs.

Master Skills

Skill Rank Mastered
Cursed EdgeCursed Edge 5
Anti-Erosion SystemAnti-Erosion System 15

List of All Skills

Xenoblade Chronicles 3 Related Guides

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List of Attacker Classes
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All Defender Classes

List of Defender Classes
Xenoblade Chronicles 3 ZephyrZephyr Xenoblade Chronicles 3 Heavy GuardHeavy Guard Xenoblade Chronicles 3 Guardian CommanderGuardian Commander
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All Healer Classes

List of Healer Classes
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