Vaati was irritated that he couldn't beat Link. While he was supposedly destroyed within his third fight with the hero of Hyrule. However, that was farther from the truth. He was very much alive and reverted back to his long forgotten human form.

Vaati stayed lying down on the grass of the forest he landed in. "Damn it all! I can't move." He hissed out loud as he did try to get up. The pain was almost unbearable for him