Which DC superhero who was created by two high school students from Cleveland, Ohio has appeared in intercompany crossovers?
Intercompany crossover In comic books, an intercompany crossover (also called cross-company or company crossover) is a comic or series of comics where characters that at the time of publication are the property of one company meet those owned by another company (for example, DC Comics' Superman meeting Marvel's Spider-Man, or DC's Batman meeting Marvel's Wolverine). These usually occur in "one-shot" issues or miniseries (comics).
Rose Psychic Rose Psychic is a DC Comics heroine affiliated with the company's first superhero, Doctor Occult. They were created by Jerry Siegel and Joe Shuster, the creators of Superman. She first appeared in "More Fun Comics" #6 (October 1935). She appeared in Dr. Occult's first story, and then disappears from the story until 1938. After Dr. Occult's original stories ended in late 1938, Rose did not appear again for more than fifty years.