Dennis "Denny" O'Neil was a comic book writer and editor best known for his work for Marvel Comics and DC Comics from the 1960s through the 1990s, and Group Editor for the Batman family of titles until his retirement. His best-known works include Green Lantern/Green Arrow and Batman with Neal Adams, The Shadow with Michael Kaluta and The Question with Denys Cowan. As an editor, he is principally known for editing the various Batman titles. From 2013 unti his death, he sat on the board of directors of the charity The Hero Initiative and served on its Disbursement Committee.

Mike Sekowsky was born Michael Sakoske on November 19, 1923 in Lansford, Pennsylvania. His parents married in Czechoslovakia and moved to America in 1922, They had eight children, Mchael (b.1923), George (b.1926), Mary (b.1927), Bernadine (b.1930), Anna (b.1932), Theodore (b.1934), Veronica (b.1936), and Edward (b.1938). The father was a carpenter. In 1927 the Sakoske family moved to New York City, where they lived in the Bronx in an apartment building at 202 Brook Avenue. In 1941 Mike Sakoske, at the age of eighteen, graduated high school in NYC, and then began to work at Timely Comics, where he changed his name to Mike Sekowsky. He drew the Apache Kid, the Black Rider, Kid Colt, Captain America, Human Torch, Sub-Mariner, The Whizzer, Georgie, Ziggy Pig and Silly Seal. In 1953 Mike Sekowsky began to work for DC Comics, where he drew romance and sci-fi stories. In the 1960s he drew Green Arrow, Metal Men, Supergirl, Hawkman, and Justice League of America. He is renowned for his re-invention of Wonder Woman in 1968 as a stylish modern feminist. In the 1980s he moved to California to work for Hanna-Barbera animated TV shows, such as Scooby-Doo, Space Ghost, Super Friends, and The New Shmoo.