First and most mind-blowing to me, some members of the King family don't think Ray was MLK's assassin.
Second was that he lived in Los Angeles in 1967-68 and got a nose job while he was there. Prior to that he tried to become a porn director in Mexico. Very twenty-first century of him. While he was in L.A. he volunteered for George Wallace. For all the fetishizing of 1960s California history that goes on, I've never once heard of this connection; I guess it doesn't fit the narrative.
And finally, the aforementioned deeds were all committed while he was a prison escapee. Ray was already a convicted violent criminal with multiple crimes in several states to his name. He managed to escape again after he was imprisoned for King's assassination, in 1977.
I've just pulled out what were to me the most surprising facts but I just got these from the James Earl Ray Wikipedia page.