Categorize the following characters into heroes and villains.
Harry Potter, Voldemort, Hermione Granger
Hero: Harry Potter, Hermione Granger 
Villain: Voldemort
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Categorize the following characters into heroes and villains.

### Response:
Hero: Harry Potter, Hermione Granger 
Villain: Voldemort