Showcase — DC Comics, National Periodical Publications
Issue: #88
Jason Grant learns his real father was killed years ago by the ruthless Tuborg, and that he was raised by his father's friend. He also learns he has a twin sister raised separately from him so as to make it harder for Tuborg, relentlessly tracking them down, to find them. His foster father killed, Jason travels to London, buys a motorcycle and begins his search for his sister, whose name he finds...
First appearances: Jason
Creators: Dick Giordano, Mike Sekowsky
Characters: Jason