[5] In issue #34 (Sept. 1943), the identity of the Black Owl was passed on from Doug Danville to Walt Walters, a character who was already established as the father of Yank & Doodle; the two series were merged.

After they learn their father is the Black Owl (Prize Comics, September 1944), the boys and dad are just one happy crime-fighting family — a healthy outlet for any father-son or sibling rivalry".

[citation needed] In 2008, the online superhero fiction site Metahuman Press debuted the series Living Legends which featured the first Black Owl as part of its cast.

According to Jess Nevins' Encyclopedia of Golden Age Superheroes, "his Rogues Gallery includes ordinary criminals, Axis agents, the Whistler, the femme fatale Madame Mystery, the murderous Reaper, Chief Skullface (a white man posing as a legendary Native American), the jolly evil prankster the Laughing Head, and the superhumanly strong and clever circus dwarf the Terrible Midge, who hates everything big".

[7] At one point during his career, the Black Owl fought alongside The Green Lama, Yank & Doodle, and several other heroes to defeat Frankenstein's monster.

In 1947, Walt suffered a bullet wound and found himself reconsidering being an active superhero; from that point on, he simply served as an adviser to Yank & Doodle.