* ActingForTwo: Several voice actors play multiple roles, which inevitably results in two characters who share screentime sharing voice actors.
* AdoredByTheNetwork: In the early days of Marvel Universe, Disney XD usually aired two episodes of ''Marvel Mash-Up'' each week, and only one each of the other interstitials. They and Marvel have also uploaded more of these videos online than they have the other interstitials.
* CastingGag: Not clear if it happened intentionally, but Iceman shares [[Creator/TomKenny a voice actor]] with the Ice King from ''WesternAnimation/AdventureTime''.
* CrossDressingVoice: The countless female characters voiced by neither Creator/TaraStrong nor Creator/GreyDelisle.
* ExiledFromContinuity: HERBIE acknowledges the absence of Johnny Storm from the ''Fantastic Four'' cartoon parody, but refuses to give the viewers an explanation.
* FakeNationality: ComicBook/{{Wolverine}}'s voice actor has a fake Australian accent, to parallel the fact his 1980s VA had a fake Australian accent.
* RoleReprise:
** The ''Fantastic Four'' ones saw Creator/GreyDeLisle reprise her role from the bonus levels of the ti-in game for ''Film/FantasticFour2005'' as Susan Storm.
** This is not the [[WesternAnimation/TheSuperheroSquadShow first time]] that Creator/TravisWillingham voiced the Hulk.
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