This article is incomplete. Please feel free to edit this article to add missing information and complete it. Reason: Is it affected by Worry Seed or Simple Beam? Can it be gained by Power of Alchemy or Receiver? Can it be changed to Mummy? Does it make the user vulnerable to Bad Dreams? Does it also prevent volatile status conditions? Is it affected by Core Enforcer? Can it be poisoned by Poison Touch Sunsteel Strike?
In battle
Comatose makes the user act as if it were asleep, without inflicting the status; the Pokémon with this Ability can still use moves (including successfully using Sleep Talk and Snore). It cannot be afflicted with non-volatile status conditions or become drowsy due to Yawn. The Pokémon with this Ability takes double damage from Hex and Wake-Up Slap, can be affected by Dream Eater and Nightmare, and cannot successfully use Rest.