Elvis was basically a bit of a rhythm and blues weaboo that Sam Philips decided to use as a promoter of black music to white teenagers.
I used to just think of Elvis as a guy with a weird voice and funny costume who was famous for no obvious reason, and that one song, Jailhouse Rock, that somehow still sounded cool despite its age.
What I didn't know was that white people didn't invent rock'n'roll, and that Elvis was the reason it became mainstream among whites in the first place.