Insomnia

Effect

Prevents sleep.

Detailed Description

This Pokémon cannot be asleep. This causes rest to fail altogether. If a Pokémon is asleep and acquires this ability, it will immediately wake up; this includes when regaining a lost ability upon leaving battle. This ability functions identically to vital spirit in battle.

In-Game Text

The Pokémon's insomnia prevents it from falling asleep.

Generation
Gen iii
Pokemon with this ability
24