Some Sith continues going by their old name after becoming the apprentice, as Darth Zannah did. Batman and Darth Vader Star Wars party on Wayne party on Darth shirt But, often, a master would gift their new apprentice with the name of the master’s choosing. These names typically played off of words with sinister or violent meanings, hinting at what the apprentice would become known for. Darth Sidious plays off the word insidious, for example. Darth Tyranus plays off tyranny and tyrant. Darth Traya was a betrayer and Jedi convert to the Dark Side. There’s also Darth Plagueis, Darth Bane, Darth Maul… Vader, along these lines, might be rooted in invader. He is the Jedi turncoat, turned against his allies, and returning to their temple in order to destroy them and any remnant of them that could rise up again.
