Robustheit

“Bietet Schutz gegen K.O.-Attacken. Bei vollen KP übersteht das Pokémon auch K.O.-Treffer.”

When this Pokémon is at full HP, any hit that would knock it out will instead leave it with 1 HP. Regardless of its current HP, it is also immune to the one-hit KO moves: Fissure, Guillotine, Horn Drill, and Sheer Cold. If this Pokémon is holding a Focus Sash, this ability takes precedence and the item will not be consumed.