Frank Kearns is a house name and not the name of an actual person.
The Unknown was a man with no name. Even though his true name was unrevealed, he did once use the alias of Pete Walker (see issue #28).
Oddity: When he meets up with his evil adversary, he states "we meet again", as if there had been an adventure before this.
The Unknown was created by Ted Udall and Bernard Klein.
Lance Blackwood, according to the Who's Who, is a by-line on this strip.
Credits suggested by the Who's Who.
Lt. Commander Blake's surname is given as "Lake" in issues #23, #24, #26, and #29.