Darth Maul's appearance adds an element of surprise and ties into the broader Star Wars lore. It creates a connection to previous events and expands the narrative.
Darth Maul's appearance in Solo added an element of surprise and connected to the broader Star Wars universe. It was a strategic decision to expand his story and engage fans.
One key element is his training. He was trained intensively in the ways of the Sith by Darth Sidious. Another is his iconic double - bladed lightsaber which is a symbol of his combat style. Also, his rivalry with Obi - Wan Kenobi is important as it shapes much of his later actions.