It’s based on the first Star Wars movie ever that came out the movie was called Star Wars a new Hope and they are basing it off of that and yes it is some knock off version of him
For those who don't know and immediately jump to thinking it's crap let me tell you that it wasn't actually Darth Vader that came out of the hole nor does he or any star wars thing actually exist in the tvdu that was just a hallucination that implied what would happen in the next episode which was a star wars themed hallucination.