Outline the characters in the given story.
Once upon a time, there was a brave knight who wandered in search of adventure.
The protagonist of the story is the brave knight who is in search of adventure. The other characters include those encountered by the knight.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Outline the characters in the given story.

### Response:
The protagonist of the story is the brave knight who is in search of adventure. The other characters include those encountered by the knight.