The collaboration character for the game’s Atomic Hearts Collaboration Update patch, The Twins make their grand debut in Reverse: 1999. In this guide, we will go over everything players need to know to best build The Twins to their fullest potential in Reverse: 1999
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The Twins Build Guide – Everything You Need To Know
General Introduction
The Twins is a 6-Star Limited Collaboration Character for the Reverse: 1999 x Atomic Hearts Collaboration Event and is the game’s first ever Arcanist to have 2 Afflatus in the same character – Mineral and Star. They serve as a DPS character for the game’s Conduit Archetype that has the ability to switch between 2 different skill kits with different Afflatus to deal effective damage to enemies.

Incantation Skill And Ultimate Analysis
To understand how The Twins works and how to best build them into a powerful Arcanist, we need to know how their Skill and Ultimate works:
| Atomic Fusion Extreme Overclocking (Arcane Skill) | Effects |
| Atomic Fusion Self Buff. Mineral Energy +4 Extreme Overclocking Self Buff. Gains Critical Rate +20% and Critical Damage +40% for 1 round. | |
| Importance: High | |
| Analysis: The Twins’s main set up Incantation Skill that buffs herself with important effects to help her deal damage. | |
| Polymeric Ray Balance Across the Stars (Arcane Skill) | Effects |
| Polymeric Ray Mass Attack. Deals 540% Reality Damage to all enemies. This attack only counts as a Mineral Afflatus attack. When attacking, for each Mineral Energy consumed by all allied Conduit this round, deals an additional 90% Reality Damage; if at least 6 Mineral Energy has been consumed this round, this effect increases to 180% Reality Damage for each Mineral Energy consumed. Balance Across the Stars Mass Attack. Deals 270% Reality Damage to all enemies. This attack only counts as a Star Afflatus attack. When attacking, for each time this Conduit has attacked round, deals an additional 45% Reality damage; if this Conduit has attacked at least 4 times this round, this effect increases to 90% Reality Damage for each time the Conduit has attacked. | |
| Importance: Highest | |
| Analysis: The Twins’s main damaging Incantation Skill that can attack all enemies depending on the Afflatus. | |
| Technological Breakthrough(Ultimate) | Effects |
| Harmonization -100. Mass Attack. Deals 2600% Reality Damage to all enemies. This attack counts as both Mineral and Star Afflatus Attack. When Cast consumes all Mineral and Star Energy. For each Energy consumed, this attack deals an additional 260% Reality Damage; if at least 6/9/12 Energy is consumed, this attack gains the following enhancements: When at least 6 Energy is consumed: This attack deals an additional 1300% Reality Damage and gains Critical Rate 100%. When at least 9 Energy is consumed: This attack deals an additional 1300% Reality Damage and gains Penetration Rate +70%. When at least 12 Energy is consumed: This attack deals an additional 1300% Reality Damage and converts excess Critical Rate into Critical Damage at a 100% rate. | |
| Importance: Highest | |
| Analysis: The Twins’s that deal massive amount of damage to all enemies and is counted as both Afflatus to enemies. | |
Inheritance Analysis
Additionally to her skills and abilities, her inheritance level will also affect The Twins’ performance in a team:
| Rank | Effects | Analysis |
| 1 | Does not gain basic incantations or Ultimates. Casts incantations by activating a [Conduit] with Energy instead. Replaces Moxie with Harmonization. The Twins’ [Conduit] contains 2 sets of incantations and can switch between Left’s and Right’s incantations. The Twins have AP +1 and Incantation Draw Limit +2, can equip 2 of their exclusive Psychubes, and possess more types of Energy incantations. When the Twins cast different incantations, they count as different Afflatuses. When attacked by a Stronger Afflatus, the enemy’s Stronger Afflatus DMG Multiplier -30%. At the start of the round, if the Twins’ Harmonization is full, generates 1 Precast Incantation duplicate of an initial Energy incantation (triggers up to 1 time every 2 rounds). After [Polymeric Ray] reduces an enemy’s Afflatus Guard to 0, gains Mineral Energy +1 at the start of the next round (triggers up to 1 time per round). After [Balancé Across the Stars] reduces an enemy’s Afflatus Guard to 0, gains Star Energy +1 at the start of the next round (triggers up to 1 time per round). | This Inheritance allows The Twins to set up her special effect, and allow her to deal both Afflatus damage and equip 2 Psychubes at the same time. |
| 2 | Critical Rate +10% when entering battle. | An inheritance that boosts their Critical Rate. |
| 3 | When entering battle, the Twins gain Harmonization +70. Whenever the Twins activate their [Conduit], for each Energy consumed, they additionally gain Harmonization +1. | This Inheritance allows The Twins to activate her Ultimate extremely early and help her set up her support effects much more frequently. |
The Twins Playstyle And Combat Role Analysis
Unlike usual Arcanists who can use their incantation skills and ultimate actively, The Twins utilize their conduits to activate different skills and effects depending on which conduit they activated. The Twins have 2 different sets of conduits they have access to, with each having a different Afflatus and a different set of Incantation Skills and Effects. Additionally, The Twins also have 1 extra AP every round, 1 extra Incantation Draw Limit and can equip 2 different Psychubes. When attacked, The Twins will take damage according to which Affaltus has the advantage against the attack, reducing the damage they take.
The Twins can choose between 2 different effects for each of their skills, with them having vastly different effects depending on which type of Energy is consumed, additionally, each of The Twins skills can only be activated when they are in the correct conduit state. The Twins’ 1st skill is only active when they activates the Mineral Conduit and utilizes Mineral energy to trigger 2 different effects: either buffing themself with more Mineral Energy and Harmonization or dealing mass Mineral damage to all enemies, dealing more damage the more Mineral Energy is consumed. The Twins’ 2nd skill works the same way, being only active if they are in the Star Conduit state and have 2 effects: grants Critical Rate, Critical Damage and Harmonization or dealing mass Star damage to all enemies, dealing more damage the more Star Energy is consumed.
Upon using their Ultimate, The Twins do a joint attack against all enemies, dealing both Mineral and Star damage to enemies and consuming all Star and Mineral Energy. The more energy they consumed, the more damage this attack dealt. Upon consuming a set amount of energy, The Twins will gain additional buffs to boost their damage output.
Best Psychubes And Resonance Build
Best Psychubes
As a Conduit DPS character, The Twins want Psychubes that can boost their damage output as much as possible. Additionally, since they can equip 2 Psychubes at the same time, players should use both Psychubes to boost their damage output
The best 2 Psychubes for The Twins is are:
| The Art of Atoms | |
| Effect | When the carrier attacks, if the carrier is also equipped with The Dance of Science, Critical Damage +36%. If the carrier is a Star character, Conduit Might +16%. |
| Analysis |
| The Dance of Science | |
| Effect | When the carrier attacks, if the carrier is also equipped with The Art of Atoms, Critical Rate +24%. If the carrier is a Mineral character, Damage Dealt +24%. |
| Analysis | This Psychube helps boost The Twins’s Attack and Max HP while also allowing her to grant 2 additional buffs to the entire team, helping to optimize her support effects. |
Resonance Build
For The Twins, players should focus on using a Resonance build that boosts their Critical and Attack stats as much as possible to optimize their damage output
Build Code: APQkOAUoRDxjOUItQCZQJQQ0IjQgKAEqAA

Players should use the Elucidation to boost The Twins Attack and Critical Stats to allow them to do more Ultimate damage to enemies
Rolling Recommendation
Should You Roll For The Twins
Yes, Absolutely. Not only are The Twins a Limited character, they are also a Collaboration Limited character, meaning they will not be rerun in the foreseeable future. Therefore, players should at least roll for them for collection purposes.
In terms of gameplay and meta, The Twins is one of the most unique DPS characters of an entirely brand new Conduit Archetype, making them an important character to have for future team building.
Should You Roll For Extra The Twins Portraits
It Depends. Generally speaking, players should invest in any Limited Characters in general in Reverse: 1999 as they are really hard to come by and take a long time to be rerun. However, The Twins’s damage output is generally high enough at P0 without any other copy investments, so players can stop at P0
That being said, The Twins’s Portrait levels does indeed boost her overall damage output the more players invest into them, so if players intend on making an investment, getting The Twins to P2 and P3 should be your priorities as these levels massively boost their damage output.
Conclusion
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