Final answer:
The Byronic hero is characterized by many traits but not by remorse and repentance, which typically remains foreign to this defiant and rebellious archetype.
Step-by-step explanation:
The Byronic hero is a character archetype that embodies certain characteristics such as arrogance, anguish, sullenness, solitude, self-will, and rebellion. However, the option that is not characteristic of the Byronic hero is 'Remorse and repentance'. The Byronic hero typically remains unrepentant, maintaining a defiant stance against societal norms and mores. This type of character can be seen in works of the Romantic period and is epitomized by figures like those in the poetry of Lord Byron, one of the forerunners of this archetype.