Boss characters are typically the main antagonists in video games, movies, or stories. They often serve as the final challenge for the protagonist, requiring players or heroes to use their skills and strategies to defeat them. Boss characters usually have unique abilities, strengths, and weaknesses that make them memorable and engaging. These characters can vary widely in design and personality, from monstrous creatures to cunning villains. They often represent a significant obstacle in the narrative, symbolizing the ultimate test of the protagonist's growth and determination. Examples of boss characters include Bowser from the Super Mario series and Darth Vader from the Star Wars franchise.