At least some content in this article is derived from information featured in Fantastic Beasts: Cases from the Wizarding World. Spoilers will be present within the article.
The creature broke a bottle of Invisibility Potion that Shacklehorn, a competent potioneer, had brewed to aid him in hunting the Graphorn. This rendered the beast invisible when Laura Thorn, a Muggle monster hunter investigating a Yeti sighting, chanced into Shacklehorn's tent (on which he had failed to place Muggle-Repelling Charms). The tent was magically transported back to the Leaky Cauldron in London, taking its three, unlikely occupants with it.
Shacklehorn initially claimed he was in the Alps to view Graphorns in their natural habitat when questioned by Mathilda Grimblehawk and her partner. However, upon further interrogation, he admitted that he had been trying to catch one. He was fined by the Ministry of Magic for illegally hunting a magical creature. Grimblehawk and her partner were able to capture the troll.
Behind the scenes
- Before he introduces himself to the player, Shacklehorn's is referred to as the "Camping Wizard".
- Shacklehorn was, apparently, a supporter of Puddlemere United, as he kept a poster of that Quidditch team in his tent.