Final answer:
An antihero is a protagonist who challenges notions of what should be considered admirable or is not admirable. They do not embody traditional 'heroic' values, but the reader still sympathizes with them.
Step-by-step explanation:
An antihero is a protagonist who challenges notions of what should be considered admirable or is not admirable. While a traditional hero embodies virtue, an antihero does not embody traditional 'heroic' values. However, the reader still sympathizes with an antihero. For example, a protagonist who is a scoundrel can be considered an antihero.