While the big mystery in Harry Potter: Hogwarts Mystery is the fate of the player character's brother Jacob, there are other mysteries that keep fans playing the mobile game every day. One such mystery is the identity of the mysterious "R," who appears to be behind some of the events involving Cursed Vaults at the school. Fans have developed a number of theories to determine R's identity, with a Reddit user putting together one of the most compelling theories yet.
Reddit user SeaEscapologist believes R isn't a singular individual, but rather two people. More specifically, SeaEscapologist thinks that R is the parents of Tulip Karasu, a Ravenclaw student that players meet as part of the main story in Harry Potter: Hogwarts Mystery. Tulip's parents work for the Department of Magical Law Enforcement, meaning they could be Aurors (essentially the Harry Potter equivalent of detectives), and it's noted in the game that Jacob was removed from the school by two Aurors.
SeaEscapologist provides additional evidence for the theory, such as the fact that "Karasu," Tulip's last name, is Japanese for "Raven." The "Raven" translation could be significant not only for the fact that it starts with an R, but also because ravens are black, and R is known to use a black quill. Of course, it's possible that Tulip's last name is simply a reference to the house she was sorted in (Ravenclaw), but SeaEscapologist's theory is still rather convincing.
Another reason why Tulip's parents, or perhaps Tulip herself, could be the mysterious "R" is because she is one of the students that does not appear in classes. Players are free to attend as many Hogwarts classes as they want to raise their stats, and these classes feature the exact same animations and characters each time. Since we're already in Year 4 of the game and Jam City has yet to change any of these classes up, one has to imagine that whoever "R" is, they aren't going to be seen in these classes.
Someone else who isn't seen during these classes is Ben Copper, who still seems to be the most likely candidate for R. Other characters express their distrust of Ben at numerous points in the story, and his extreme anxiety could be a front to throw people off the trail.
Whether R is Ben, Tulip's parents, Tulip, or someone else entirely remains to be seen. Harry Potter: Hogwarts Mystery players will just have to keep spending energy and pushing through the story to find out for certain.
Harry Potter: Hogwarts Mystery is out now for iOS and Android mobile devices.