A full-werewolf, male form Whatevr appears a few yards outside of the dungeon in a small puff of leaves, holding in his arms a
Korok. He lets go of the plant-being, allowing it to float in midair. "Yes, yes--this will be
much more entertaining than just setting you in the park and hoping for shenanigans. You need a little more getupandgo, though; floating around here won't get things happening. Let's see..." He retrieves a sticky note, scribbles down some words, and places it on the Korok's forehead.
The note turns to dust, and the Korok lands, giving a headtilting look at Whatevr. "Yahaha! You found me?"
"No, I didn't," he shakes his head, and then points inside the dungeon. "Go in there, they have really good places to hide from the hero if you win,
maybe."
The plant-person nods innocently and turns around, waddle-walking inside to where the others are. Whatevr allows himself a pleased nod before turning into a suspiciously werewolf-shaped topiary bush.
...TL; DR: So a Korok walks into the place. "Yahaha?"