Elron - Even "evil" old Aleister Crowley once said of him "He's a vewy, vewy baaad man."
The guy met a rocket scientist (really, he really was) named Jack Parsons, who was (one of) Aleister Crowley's partners in "crime" and a member of Ordo Templi Orientis.
Elron apparently spent some time with these two and ended up stealing Jack Parson's mistress from him, along with much of his estate.
The story goes that Crowley thought Parsons an idiot for divulging certain knowledge to Hubbard. He apparently used this knowledge to create the religion we now know as Scientology, an enslaving, evil, black magick cult...
er, ah, no, really, I love Scientology. All hail Elron!! All hail Elron!!