Legendary item (red). What the game says, what it really does, what each copy adds and what it pairs with.

Happiest Mask
Legendary item (red)
Enemies you kill sometimes come back as ghosts that fight for you for 30 s. Each extra mask, 30 s more.
Game text: «Killing enemies has a 7% chance to spawn a ghost of the killed enemy with 1500% damage. Lasts 30s (+30s per stack).»
Stacking: The chance stays at 7%; each copy adds 30 s of ghost.
Watch out: Some ghosts can still hurt or kill you (Lynx Totem, Grandparent).
| 1 copy | 2 copies | 3 copies | 5 copies | 10 copies |
|---|---|---|---|---|
| 30 s | 60 s | 90 s | 150 s | 300 s |
Each copy adds the same.
more kills, more ghosts.
boss ghosts with every boss you kill.
Drops from legendary chests and, less often, from large and small chests.
Unlocked from the start: it can show up in any run.
Enemies you kill sometimes come back as ghosts that fight for you for 30 s. Each extra mask, 30 s more.
Stacking: The chance stays at 7%; each copy adds 30 s of ghost.Watch out: Some ghosts can still hurt or kill you (Lynx Totem, Grandparent).
Drops from legendary chests and, less often, from large and small chests. Unlocked from the start: it can show up in any run.
Sources: the game's English text (name and description), the Risk of Rain 2 wiki (riskofrain2.wiki.gg: this item's page, read on 31 October 2026; numbers, stacking formula and notes) and the wiki's survivor pages. The plain-words text and the synergies are ours. Icons: Risk of Rain 2 (Hopoo Games / Gearbox).