Why is Mordred evil?

Mordred is often portrayed as evil due to his betrayal of King Arthur and the resulting chaos he brings to Camelot. In Arthurian legend, he is typically depicted as the illegitimate son of Arthur, which fuels his resentment and desire for power. His actions, including the manipulation of allies and the pursuit of vengeance, highlight his ambition and moral corruption. This complex character serves as a foil to Arthur's ideals, embodying the themes of treachery and the consequences of familial conflict.