This is a pretty exclusive club to say the least. You can't get in unless you've died and come back to life. We don't know too many folks who've managed to pull off that trick, but it's pretty impressive. Dionysus gets extra points because he actually managed to go to the underworld and back a couple times, too.
Just like Dionysus, this Egyptian god died and came back to life. In another fun story, Osiris was dismembered and then put back together again. Sound familiar? Because of these similarities, Dionysus and Osiris are often equated and sometimes even conflated (merged into one). Two peas in a pod, we guess.
Based on Dionysus' reputation for wild behavior, you might not think that he and Jesus have a lot in common. The two are compared pretty often, though, because both of them were said to have died and come back to life. The dismemberment and resurrection of Dionysus was a key aspect of his religion, just as Christ's death on the cross and resurrection is the major basis of Christianity.