The Mound wiki
Servants of K'n-yanNO MEASURED HP

Doppelganger

Infiltrates disguised as a teammate and turns the crew against itself. Takes double damage once unmasked.

Last updated 2026-07-25 · Patch patch 1.01
Doppelganger

Measured values

HP
Damage taken
Family
Servants of K'n-yan

No community measurement for this one yet. Bosses and several of the unkillable horrors have never produced a reliable HP figure — we leave the field empty rather than invent one.

What it actually takes to kill

The multiplier is the number that matters. At , this creature takes more damage than its health bar suggests — It dies far faster than it looks.

Standing orders

Takes 2× damage — the problem was never killing it, it is telling it apart from your crew. Proximity voice and a shared callsign beat any amount of firepower here. The launch update improved its behaviour, so old advice may not hold.

Comparable creatures

CreatureHPDamage taken
Transmuter120
Mi-Go60
Deep One1200.33×
Hound of Tindalos12010×
Crawling Canopy180
Prowler150
Flesh Shambler10000
Formless Spawn
Haunter of the Dark
Shoggoth Worm

Keep reading

Doppelganger questions

How much HP does the Doppelganger have in The Mound?

Nobody has produced a reliable HP measurement for the Doppelganger. We leave it blank rather than guess — treat it as a threat to avoid rather than a fight to budget for.

How do you spot a Doppelganger in The Mound?

Not by looking. It takes double damage once you commit, so the hard part is identification — crews use proximity voice checks and agreed callsigns. Sanity effects make your own eyes the unreliable instrument.