Heavy Sleeper is a Medal in Bug Fables. It halves the damage an ally receives while asleep, and increases HP healed from sleep healing from 10% of max HP to 30% per turn.
It is useful against enemies or bosses which can inflict Sleep, like Numbnails, Venus' Buds, and Venus' Guardian, often turning the tide of battle in the ally's favor when asleep. Very few enemies can deal more than 6 damage, so it is common to receive a full heal from sleeping, making it highly advantageous, despite that ally not being able to move.
How to Acquire
There is 1 Heavy Sleeper medal available. It can be found during Chapter 2 at the earliest, after the Golden Festival ends, by completing the Hydration Crisis! quest.