Ability · Gen 5 · 3 Pokémon
Iron Barbs
Pokemon making contact with this Pokemon lose 1/8 of their max HP.
Pokemon making contact with this Pokemon lose 1/8 of their maximum HP, rounded down.
Iron Barbs was introduced in Generation 5. 3 Pokémon and forms can have it.
Best Pokémon with Iron Barbs
Ranked by usage in public Pokémon Showdown battles (Champions VGC first, then National Dex OU, SV OU and Champions Singles), with how many of each Pokémon's sets actually run Iron Barbs.
Pokémon with Iron Barbs
As a regular ability (3)
Iron Barbs FAQ
What does Iron Barbs do?
Pokemon making contact with this Pokemon lose 1/8 of their maximum HP, rounded down.
Which Pokémon have Iron Barbs?
3 Pokémon and forms can have Iron Barbs: Ferroseed, Ferrothorn and Togedemaru.
What are the best Pokémon with Iron Barbs?
By competitive usage, the most used Pokémon that can have Iron Barbs are Ferrothorn (#14 in National Dex OU, 100% run Iron Barbs) and Togedemaru (#291 in National Dex OU, 5.8% run Iron Barbs).
Effect text from Pokémon Showdown (MIT); which Pokémon have it from Showdown's Pokédex, cross-checked against PokéAPI. Unofficial fan site.