Which leads me to be annoyed he didn't turn out to eventually become the Time Trapper. Which I think would have been a fairly elegant linkage. The most interesting thing about him is his strange existence outside both time and continuity. Every time he finally has The Dream and remembers everything, he wreaks havoc and reality is overwritten, then reverts back again in the end, and no one, not even him, remembers he was ever any kind of threat. He's a walking Elseworld generator.
It might have been interesting if--while in his harmless, non-remembering state--he'd somehow become friends with a minor superhero in their normal identity. (or Johnny Thunder)