So, if the Stranger is Gandalf, then that means the Dark Wizard is either Saruman, Radagast, or one of the two Blue Wizards.
In Tolkien’s lore, there were five Istari: Blue Wizards Alatar and Palandar, Saruman the White, Radagast the Brown, and, of course, Gandalf the Grey. Because Radagast mostly stayed out of major ...