Dr. Weird was Howard Keltner’s creation, appearing in the first issue top comic book fanzine of the early 1960s, Star-Studded Comics. Although, George R.R. Martin claims he was unrelated to the contemporaneous Dr. Strange, both projected themselves into the astral plane to fight occult menaces. Weird’s menaces, though, were certainly darker—and he came from the future.

I don’t know whether any episodes after the origin included time travel.