Goblins are fictional creatures from the Harry Potter Universe.
They don't take sides in wizard's wars, as they see wizards as thieves under Goblin rules. This being because what a Goblins makes for a wizard is never returned to the Goblins upon that wizards death. Bill Weasley works as a curse breaker in Egypt, during the first 5 years of the Harry Potter stories, for Gringotts. The goblins run Gringotts Wizarding Bank.