Sturdy
The Pokémon cannot be knocked out by a single hit as long as its HP is full. One-hit KO moves will also fail to knock it out.
Rock Head
Protects the Pokémon from recoil damage.
Although it always pretends to be a tree, its composition appears more similar to rock than to vegetation.
To avoid being attacked, it does nothing but mimic a tree. It hates water and flees from rain.
Though it pretends to be a tree, it fails to fool even children. To the touch, its body feels more like rock than tree bark. Sudowoodo’s extreme aversion to water merits special note.