"Nemesis" is a term that originates from Greek mythology, referring to the goddess of retribution and vengeance. She is often depicted as a figure who delivers justice to those who succumb to hubris or excessive pride. In this context, nemesis represents the inevitable consequences that follow wrongdoing, serving as a reminder of balance in the universe. In modern usage, "nemesis" can also refer to a formidable rival or opponent. This concept is commonly found in literature and film, where a hero faces a nemesis who challenges them and embodies their greatest fears or flaws. Examples include characters like Sherlock Holmes and Professor Moriarty or Batman and The Joker.