''Underdog'' is a title shared by the following works:

* ''WesternAnimation/{{Underdog}}'': A 1960's WesternAnimation series about a canine superhero with a secret identity.
** ''Film/{{Underdog}}'': A 2007 film adaptation of the animated series.
* ''Manga/{{Underdog}}'': A 2008 [[HorrorAnimeAndManga horror manga]] about a misanthropic youth thrust into a DeadlyGame.

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