Ron and Grover would be a fun combination. Ron is a bit of a foodie and has a great sense of humor, while Grover is a satyr who loves nature and is always a bit nervous. They could get into all sorts of comical situations together, like when they accidentally set off a magical trap in Hogwarts while looking for food in the kitchens, or when they try to communicate with the magical creatures in the Forbidden Forest and end up scaring each other.