At least some content in this article is derived from information featured in Harry Potter: Hogwarts Mystery. Spoilers will be present within the article.
The Sea Urchin Jinx is a jinx that transfigures the target victim into something similar to a sea urchin, with tiny spikes erupting all over the victim's body. It apparently creates awful discomfort in the target.
This spell was used on 2 May, 1998, during the Battle of Hogwarts, by Percy Weasley on an Imperiused Pius Thicknesse. This happened right before his brother Fred died as the result of an explosion.
Behind the scenes
- The duel between Percy and Pius is not shown in the film adaption, therefore this spell is not seen either.