For instance, the Jesuit order is formally "Society of Jesus", whilst "the Society of Jesus" is usually used in a sentence, where "the" is added.
I want to create a fantasy character called Duke Anonius, whose title I intend to be "Twilight Breaker". Should I add "the" to make the title
- "Duke Anonius, the Twilight Breaker", or
- "Duke Anonius, Twilight Breaker"?
(By the way, it's for a board game that I'm making in my spare time)