Rebecca is one of the first characters you will unlock in Duet Night Abyss, and carries herself well into the endgame, so you'll want to build her up properly. In fact, she’s one of the most useful units in the game, mostly thanks to her utility as a dedicated farming unit in commissions. With that in mind, here are the best builds to use for Rebecca, taking into account (mostly) early game scenarios.
Best Build for Rebecca in Duet Night Abyss
Rebecca scales off Hydro DMG, and you should take this into consideration when you build her. With that in mind, here’s the best build for Rebecca, including her weapons and Geniemons in focus.
This is based on a pretty early game build, and will be updated later on to focus on late game progression.
Best Melee Weapon for Rebecca
The best weapon for Rebecca is the Vemal Jade Halberd. This particular weapon pairs nicely with her overall kit, boosting her attack speed by 25% (letting her stack those debuffs quicker), in addition to dealing 45% additional damage to debuffed targets.
Once you have enough resources to craft it, try grabbing the Siren’s Kiss as well, which is the meta melee weapon for Rebecca (and other top tier characters in Duet Night Abyss. Siren's Kiss boosts her skill range and attack speed.
Best Ranged Weapon for Rebecca
The best early game ranged weapon for Rebecca is the Soulrend. This bow increases her skill range by 36% at the base level, making her abilities a lot more potent. If you’re looking for a gun, try the Osteobreaker, which increases her skill’s duration, letting you stack Poison of Love for a longer duration.
Best Geniemon for Rebecca
When it comes to Geniemons in early game for Rebecca, go with the Miraculous Bunniva, which is unlocked very early on during exploration. This Geniemon boosts the ATK of all summoned units (such as the Aurelia Aurita), in addition to increasing the Hydro ATK % of allies.
Ultimately though, you’ll want to focus on farming Hydraelf instead. Hydraelf is an amazing Geniemon that boosts the Hydro ATK of the character. Most importantly, it boosts Rebecca’s damage directly, depending on the number of Aurelia Aurita on the field.
Skills to Prioritize for Rebecca
Like most characters in Duet Night Abyss, Rebecca has her own skills to focus on. The Skill we recommend you prioritize are at the top of the table, with priority going down as you go down the list.
| Passive | Effect |
|---|---|
| DMG | Ultimate ability, deals Hydro DMG in an AoE. DMG scales on the number of Poison of Love stacks. The most damage you’ll deal with Rebecca will be when using her Ultimate. This is a very useful skill to have for clearing through large mobs. |
| Summon | Summons up to 3 Aurelia Aurita companion NPCs. These inherit Rebecca’s stats and deal Hydro DMG to enemies continuously. These will your main source of consistent damage. Make sure to invest in this skill once you’re done with the Ultimate. |
| Passive | Applies the Poison of Love debuff on enemies when attacking with melee weapons. This is stackable. Upgrading this is more of a QoL change. It certainly helps to have it, but you should prioritize the other two first. |
Best Teams for Rebecca
You’ll want to use Rebecca with the Phoxhunter, along with Truffle and Filbert to make a complete trio.
Rebecca acts as the main DPS in this team, dealing Hydro damage over time to enemy units. Truffle and Filbert are your main support units, providing buffs and heals to keep Rebecca alive and well during the battle.
Phoxhunter is a decent filler character in the third slot, until you have access to better options. That being said, the Phoxhunter is more than capable in battle as a support, providing shields and damage buffs.
How to play Rebecca in Duet Night Abyss
Rebecca’s rotation in Duet Night Abyss is pretty straightforward, and involves the following steps in sequence, repeated till the enemies drop to zero HP:
- Make sure to take control of Rebecca before you proceed.
- Jump into battle, and cast her Summons (E key), until they finish stacking (maximum of three).
- Deploy the Geniemon as your support unit.
- Attack enemies to apply the Poison of Love debuff.
- End the sequence with the Ultimate ability to deal a massive amount of damage.
- Rinse and repeat.
Best Rebecca Build for Duet Night Abyss FAQs
Rebecca excels in Hydro DMG, and you’ll want to reflect that on your Demon Wedges’ stats accordingly. Focus on Hydro DMG and ATK%, and other passives are a bonus (like Crit DMG).
Most definitely. Rebecca is the solo carry of the game at present, and can clear the toughest of stages with relative ease. Rebecca can be left for you to farm mobs while idling, making her a great AFK unit.
Rebecca can be farmed using the Secret Letter system in the game. You’ll require 30 Character Thoughts of Rebecca from these letters to unlock her.
She’s also being handed out for free as part of the game’s release campaign. Simply log in and claim your Mail to unlock her.
For more on Duet Night Abyss, check out Duet Night Abyss Codes (October 2025) on Pro Game Guides.
Dipan is a writer for Pro Gamer Guides, having completed his Masters in Zoology from Vidyasagar College, Calcutta University. His favorite genres include horror and action (more specifically, hack-and-slash), with favorites including the Devil May Cry series, Prince of Persia and Alien: Isolation.
His other interests include anything related to technology, with bleeding edge hardware (when he's not inadvertently bricking his devices).