Charlton Comics:

Underdog (1970) 1-10 {1970-1972}

Dell/Gold Key Comics:

Underdog (1975) 1-23 {1975-1979}

March of Comics (1946) 426 + 438 + 467 + 479 {1977-1981}

Spotlight Comics:

Underdog (1987) 1-2

Harvey Comics:

[One Shot] Underdog Summer Special (1993)

Underdog (1993) 1-5

American Mythology:

Underdog (2017) 1-4

[One Shot] Underdog 1975 (2018)

Underdog and Pals (2019) 1-3

[One Shot] Underdog Halloween ComicFest (2019)

[One Shot] Underdog in Space (2020)