It was lingering in the background, sir. I'm not sure if it's wild or if it's a spy. I taunted it to coax it into battle. I suggest checking this mysterious entity with your pokédex.

Now! Quick! Finte! [ Sneasel walks towards Shuppet with big, doe eyes. The Shuppet looks briefly, clearly mesmerized. Then Sneasel proceeds to deck Shuppet, causing it to twirl about in pain. ]