History Main / SecondEpisodeIntroduction

* ''WesternAnimation/ThePatrickStarShow'': The first episode introduces the Star family. The second introduces [=SpongeBob=] and focuses entirely on him and Patrick. While Squidward had an EarlyBirdCameo in the previous episode, he also gets a supporting role here.

* In ''Series/{{Frasier}}'', Bulldog does not appear until the second episode.

* Adrasteia, one of the primary viewpoint characters ''Literature/TheLightbringerSeries'' is introduced in the second book (of five). In fact the, "color," that she drafts doesn't even appear in the first book.

* ''WesternAnimation/Cybersix'''s second episode introduces Data-7, who would go on to become Cybersix's NonHumanSidekick; as well as the recurring character Julian.

* In the ''VideoGame/WarioWare'' series, 18-Volt and 5-Volt both make their first appearance in ''VideoGame/WarioWareTwisted'', the second game in the series (between it and the first game, ''VideoGame/WarioWareMegaPartyGames'' was released, but it was a multiplayer-oriented take on the first game). Ashley, Red, and Mike first appear in ''VideoGame/WarioWareTouched''; and Penny, Young Cricket, and Master Mantis first appear in ''VideoGame/WarioWareSmoothMoves''.

* In the ''VideoGame/WarioWare'' series, 18-Volt and 5-Volt both make their first appearance in ''Twisted'', the second game in the series. Ashley, Red, and Mike first appear in ''Touched'', and Penny, Young Cricket, and Master Mantis first appear in ''Smooth Moves''.

* ''WesternAnimation/{{Young Justice|2010}}'' properly introduces Superboy to the team in the second episode of [[Recap/YoungJusticeS1E1and2IndependenceDayandFireworks their two-part pilot]]. Miss Martian's first official episode as a team member is [[Recap/YoungJusticeS1E3WelcometoHappyHarbor the third episode]].

* Asuna in the anime adaptation of ''LightNovel/SwordArtOnline''. Technically we see her in the first episode when all the players were rounded up, but she didn't actually say anything.

* ''Series/TwoAndAHalfMen'': Charlie's housekeeper Berta doesn't appear for the first time until "If I Can't Write My Chocolate Song, I'm Gonna Take a Nap", which is the fourth episode.

* ''WesternAnimation/{{Rugrats}}'': Chas Finster first appears until "Barbeque Story", which is the first short of the second episode. Though he wouldn't be properly introduced until "Touchdown Tommy" near the end of the season.

* ''WesternAnimation/{{Rugrats}}'': Chas Finster doesn't appear until "Barbeque Story", which is the first short of the second episode. Though wouldn't get properly introduced until "Touchdown Tommy" near the end of the season.

* ''WesternAnimation/{{Rugrats}}'': Chas Finster doesn't appear until "Barbeque Story", which is the first short of the second episode.

* April O'Neil did not appear until the second issue of ''Comicbook/{{Teenage Mutant Ninja Turtles|Mirage}}''.

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* ''Series/TheWalkingDead'':

* Zaphod Beeblebrox, Trillian and Marvin the Paranoid Android were all introduced in the second episode of ''Radio/TheHitchhikersGuideToTheGalaxy''.

* Brooke Davis on ''Series/OneTreeHill'', who quickly became an EnsembleDarkhorse and one of the show's leads.

* The first episode of ''Anime/PokemonTheOriginalSeries'' had Ash, Pikachu, and Misty but Team Rocket didn't show up until the second. (Brock, who outlasted Misty's presence in the anime by several seasons, doesn't appear until episode five.)

** Commander Zhao, one of the main antagonists of the first season of ''WesternAnimation/AvatarTheLastAirbender'', who is first seen after the two-part intro episode. In the same episode we are introduced to Zhao, we are first shown the ruins of the genocide of the Air Nomads.
** The second episode of ''WesternAnimation/TheLegendOfKorra'' introduced both Bolin and Mako.

* ''WesternAnimation/{{Futurama}}'' introduces the supporting Planet Express crew -- Hermes, Amy and Zoidberg -- in the second episode. The exception is Scruffy (the Janitor) who didn't appear until the sixth episode and was largely a background character [[AscendedExtra until later on.]]

* ''WesternAnimation/GravityFalls'': The second episode of Season 1, "The Legend of the Gobblewonker" introduces Old Man [=McGucket=], who throughout the series goes from a comic relief character to being critical to the plot.
* ''WesternAnimation/JusticeLeague'': Most of the first part of the pilot focuses on Superman and Batman, with Martian Manhunter, Wonder Woman, and the Flash also making appearances. Green Lantern and Hawkgirl are introduced in part 2, officially forming the team for the first time.

** Like in the original comic, April is absent until the second episode of ''WesternAnimation/TeenageMutantNinjaTurtles2003''. It's the only time an animated adaptation excludes her from the pilot episode.
** ''WesternAnimation/TeenageMutantNinjaTurtles1987'' waited until the second episode to bring in Krang and mutate Bebop and Rocksteady into their warthog and rhino forms.

* ''WesternAnimation/YoungJustice'' properly introduces Superboy to the team in the second episode of their two-part pilot. Miss Martian's first official episode as a team member is the beginning of the third episode.

** ''Anime/PanyoPanyoDiGiCharat'' introduces the rest of its main cast ({{Sleepyhead Rinna}}, [[FieryRedhead Meek]], and [[GoldfishPoopGang Piyoko and the Deji-Devil]]) in the second, third, and fourth episodes respectively.