Animators have a lot of leeway when it comes to creating their characters. Take Grimmell, for instance, in the latest How To Train Your Dragon instalment. He spoke in a somewhat foreign accent, like Spanish (I thought). His character put me in mind of Javier Bardem as Raoul Silva in Skyfall.
But it turns out the voice for Grimmell is actually F. Murray Abraham (of Amadeus fame).