The goblin in 'Harry Potter' is part of a whole species, not just one individual, but if you're thinking of the most prominent goblin character, that'd be Griphook. He's the one who works at Gringotts Wizarding Bank and plays a key role in helping Harry, Ron, and Hermione break into Bellatrix Lestrange's vault during the Deathly Hallows heist. Goblins in the series are fascinating—they're shrewd, proud, and have a complex relationship with wizards, especially when it comes to ownership of magical artifacts. J.K. Rowling really fleshed out their culture, making them more than just background creatures.
What I love about the goblins in 'Harry Potter' is how they subvert fantasy tropes. They aren't mindless monsters; they're skilled craftsmen, bankers, and have their own laws and customs. Griphook, in particular, stands out because he's not just a one-dimensional ally or villain. His betrayal later in 'Deathly Hallows' stems from legitimate grievances against wizards, which adds depth to the conflict. The way Rowling uses goblins to comment on greed, power, and cultural tension is low-key brilliant. Makes you wish we got more of their history in the main series!