Issue: #490
Last valuation update: 2026-10-22
This is the final appearance of the Dial H for Hero feature in Adventure Comics. It continued in New Adventures of Superboy #28.The character Blackjack was created by Stephen DeStefano, when he was just 15 and submitted the character as a fan.
First appearances: Blackjack, The Abyss, The Serpent, The Squid
Creators: John Costanza, Carmine Infantino, Stephen DeStefano, Bob Rozakis, Len Wein, George Pérez, Mike W. Barr, Bob Smith, Carl Gafford, Larry Mahlstedt, E. Nelson Bridwell, Rodin Rodriguez, Howard Bender
Characters: Chris King, Vicki Grant, Blackjack, The Abyss, The Serpent, The Squid