Duet Night Abyss revolves around two leads, Phoxhunter and the Boy/Girl in the Dream, whose gender can be chosen independently at the start, affecting their visual style and voice acting but maintaining the same core story.

Duet Night Abyss has only a few male characters. The roster includes playable figures such as Phantasio, Randy, and Yale and Oliver, each with special traits and backgrounds tied to factions like the Hyperborean Empire and Electro element affiliations.

Character Details
Phantasio Birthdate: October 9th
Traits: Geologist
Impression: Chaos
Faction: Umbro
Combat style: Greatsword, shotgun
Yale and Oliver Birthdate: December 21st
Traits: Tamer
Impression: Wisdom
Faction: Pyro
Combat style: Sword, shotgun
Outsider Birthdate: April 1st
Traits: Piscator
Impression: Empathy
Faction: Anemo
Combat style: Dual blades, dual pistols
Randy Birthdate: March 14th
Traits: Adventurer
Impression: Wisdom
Faction: Electro
Combat style: Sword, pistol

In a game with a preponderance of female characters, these male characters deliver diverse gameplay with DPS, support, crowd control, and healing roles, and wield weapons ranging from swords and pistols to greatswords and shotguns.

Phantasio

Phantasio specializes in transformation mechanics and stands out as a unique dark performer who channels emotion into destructive power. His Umbro element places him in a rare category, and he operates through Adagio stacking, a mechanic where he applies stacks to enemies that build toward explosive payoffs.

When triggering Fermata with sufficient stacks, enemies become vulnerable, allowing Phantasio to transition into Bestial Fury and unleash a flurry of attacks that scale based on accumulated Adagio stacks.

His Ultimate grants him sanity restoration when dealing 10 Adagio stacks to a target, solving resource management challenges that plague other skill-dependent characters. This positions him as a strong sub-DPS for players who enjoy position-based combat and stacking mechanics.​​

Yale and Oliver

Yale and Oliver represent a unique case where two personalities operate as a single playable unit. Belonging to the Unaffiliated faction, these twin inventors command Pyro-based mechanics through their Tot Popper bombs. Their gameplay revolves around deploying these bombs in distinct forms, each with different detonation properties, creating cross-shaped explosive areas that damage enemies.

The dual-form system encourages strategic bomb placement, and the mechanics reward players who coordinate Yale's and Oliver's different bomb types for enhanced effects. This complex but rewarding kit places them in high-tier discussions among skilled players seeking mechanical depth.​

Outsider

Outsider channels Anemo element powers as a piscator with empathetic impression traits. Affiliated with the Noctoyagers, Outsider operates as a weapon damage specialist through Dual Blades and Dual Pistols. His Stealth state enables tactical positioning and generates Fang Spikes to attack nearby enemies when entering or exiting this state.

His Relentless Hunt state grants immunity to Hitstun and increases weapon attack speed, making him effective for players seeking high mobility and fast-paced engagement. He balances high damage potential with positioning requirements that reward careful play.​​

Randy

Randy fulfills the support and defense archetype, the only male character designed primarily for team protection. Serving the 13th Legion, Randy commands Electro element through defensive skill deployment. His Legitimate Slackness skill deploys a barrier that absorbs damage while dealing Electro damage to nearby enemies. The barrier consumes sanity to operate and inflicts Overwork Grudge on affected enemies, making it useful for crowd control alongside protection.

Cavalier Composure grants stacking defense bonuses to teammates when Randy successfully shields them, encouraging active barrier management to maximize team effectiveness. His passive Holdfast increases defense for Randy and nearby allies, establishing him as a critical support pillar. Randy ranks as a solid A-tier choice for team compositions that need dedicated protection.

How to unlock male characters through free progression

All four male characters unlock through identical progression systems without gacha mechanics. Upon reaching Chapter 1 and unlocking the Sanctuary hub, the Covert Commission system becomes available, enabling character acquisition through grinding.

Secret Letters represent character-specific unlock items. Accumulating 10 Secret Letter Clues through Covert Commission completions enables purchasing a character's Secret Letter. Each Covert Commission stage drops clues at approximately 10% rates, requiring roughly one hour of focused farming per character.

Step 1

Complete Tutorial sequences and progress through early Main Story chapters until Sanctuary hub unlocks.

Step 2

Access Covert Commission through the Sanctuary and select a stage matching your target male character.

Step 3

Complete Covert Commission stages repeatedly to accumulate 10 Secret Letter Clues for your chosen male character.

Step 4

Purchase the male character's Secret Letter using 10 accumulated Secret Letter Clues.

Step 5

Return to the Covert Commission stage and open the Secret Letter after completing another stage to generate Thought fragments.

Step 6

Repeat stages until gathering 30 Thought fragments total, unlocking the full character.

Alternative acceleration uses Phoxene Plumules, the premium currency purchasable with real money, allowing direct Thought fragment purchases at 150 Plumules per single fragment. This creates flexible progression where players can grind indefinitely or spend to accelerate unlocks based on personal preference.

An all-male dual narrative experience

Both main protagonists support male customization, letting you create an all-male dual narrative experience. Phoxhunter represents the "Night Voyage" perspective - a hunter surviving through isolation and self-reliance in a hostile frozen landscape. The Boy in the Dream anchors the opposing "Twilight Anchorage" narrative, operating within institutional power structures and revealing larger conspiracies.​

Male Phoxhunter is voiced by Joshua Wichard in English and Natsuki Hanae in Japanese - famous for voicing Tanjiro Kamado in Demon Slayer.