Who gets the Doppelganger effect from The Doppelganger Mystery?

Only Hero characters: Alf, Detective and Rex in the current roster. None of our build pages pick it yet, so on anyone else it only adds its 4,762 HP and 582 ATK at Lv. 80.

Is it worth getting duplicates of The Doppelganger Mystery?

Each duplicate raises its Resonation Tier by one, up to Tier 5. From Tier 1 to Tier 5 its scaling values go from 25 to 45, 20 to 36 and 25 to 45. At Tier 5 it reads: "The character using this Motive gains 45% CRIT Rate. Upon unleashing a Tactical Assault, their ATK is increased by 36% for 16s; upon unleashing a skill, their CRIT Rate is increased by 45% for 4s."

How strong is The Doppelganger Mystery at Lv. 80, and what does it cost?

4,762 HP and 582 ATK, the highest ATK among the 9 five-star Motives (shared with 2 others). Reaching Lv. 80 takes 26,875 Ounce, 12 Hero's Instinct, 8 Hero's Insight, 8 Hero's Challenge and 16 Hero's Legacy.

The Doppelganger Mystery

Updated 1 November 2026 · 5-star · Hero · 582 ATK at Lv. 80

The Doppelganger Mystery is a 5-star Hero Motive (weapon) in Silver Palace, with 582 ATK and 4,762 HP at Lv. 80. Its Doppelganger effect at Tier 1: The character using this Motive gains 25% CRIT Rate. Upon unleashing a Tactical Assault, their ATK is increased by 20% for 16s; upon unleashing a skill, their CRIT Rate is increased by 25% for 4s. Only Hero characters get it: Alf, Detective, Rex.

Stats by level

Lv. 1 to 80

LevelLv. 80

Base HP

4,762Lv. 80

Lv. 1 · 216×22.0 from Lv. 1

Base ATK

582Lv. 80

Lv. 1 · 26×22.4 from Lv. 1

Max level in the beta files.

Doppelganger effect

Resonation Tier 1 to 5

One copy

The character using this Motive gains 25% CRIT Rate. Upon unleashing a Tactical Assault, their ATK is increased by 20% for 16s; upon unleashing a skill, their CRIT Rate is increased by 25% for 4s.

Each duplicate raises the Resonation Tier by one. Only Hero characters get this effect: Alf, Detective and Rex.

Breakthrough materials

Six breakthroughs, Lv. 20 to 70

Lv. 20
- ×4
1,250Ounce
Lv. 30
- ×8
1,875Ounce
Lv. 40
- ×8
2,500Ounce
Lv. 50
- ×8
3,750Ounce
Lv. 60
- ×6
5,000Ounce
Lv. 70
- ×10
12,500Ounce
Total
- ×12
- ×8
- ×8
- ×16
26,875Ounce

Books in the total, left to right: Hero's Instinct, Hero's Insight, Hero's Challenge, Hero's Legacy. Where they drop is on the Motives page.

In the database

One of 8 Hero Motives, 2 of them 5-star.
Its 582 ATK at Lv. 80 is tied for the highest among the 9 five-star Motives (3 share it).

Lore

The Detective siblings make a perfect team. A glance or a gesture is enough for them to exchange information, skipping class, going on adventures, playing detective games together.
They once believed that their blood-bound trust could last forever, until the day came when the mirror became the only way to see the other's face.
On either side of the glass, the reflection and its source each become the other's assistant, detective, cause, and effect.

Data compiled from the Dichotomy beta game files, checked 1 November 2026. Launch is 14 December 2026 (UTC+8), and names and numbers can change before then.

Frequently asked questions

3 answers, always open

Ask on Discord

Who gets the Doppelganger effect from The Doppelganger Mystery?: Only Hero characters: Alf, Detective and Rex in the current roster. None of our build pages pick it yet, so on anyone else it only adds its 4,762 HP and 582 ATK at Lv. 80.
Is it worth getting duplicates of The Doppelganger Mystery?: Each duplicate raises its Resonation Tier by one, up to Tier 5. From Tier 1 to Tier 5 its scaling values go from 25 to 45, 20 to 36 and 25 to 45. At Tier 5 it reads: "The character using this Motive gains 45% CRIT Rate. Upon unleashing a Tactical Assault, their ATK is increased by 36% for 16s; upon unleashing a skill, their CRIT Rate is increased by 45% for 4s."
How strong is The Doppelganger Mystery at Lv. 80, and what does it cost?: 4,762 HP and 582 ATK, the highest ATK among the 9 five-star Motives (shared with 2 others). Reaching Lv. 80 takes 26,875 Ounce, 12 Hero's Instinct, 8 Hero's Insight, 8 Hero's Challenge and 16 Hero's Legacy.