* ActorAllusion: At the start of Vs. Mode matches in the second game, Boxy Boy will quote Hairdresser Octopus for no real reason. Both characters are voiced by Freedom Bremner.
* {{Bowdlerise}}: In the American version ''[=PaRappa 2=]'', all references to God were changed to "the man", the lyric "...tastes better than wine" was changed to "...you better get in line", and "Warm the buns" became "Toast the buns" (to avoid AccidentalInnuendo). However, they didn't seem to mind [[GettingCrapPastTheRadar "Slurp it! Suck it! I know you all like it!"]]
* CrossDressingVoices: Ryu Watabe as Ma-san.
* DevelopmentHell: [[http://www.gamasutra.com/view/feature/2340/interview_rodney_greenblat_the_.php This was the reason why there wasn't a ''[=PaRappa=] the Rapper 3''.]]
* GermansLoveDavidHasselhoff: Due to RodneyGreenblat's popularity in Japan, he was chosen to design the game's characters and environment.
* TheOtherDarrin: Sunny, Katy Kat and MC King Kong Mushi in ''[=PaRappa=] 2''. Katy goes through another VA change in ''VideoGame/PlaystationAllStarsBattleRoyale''.
* TalkingToHimself: Throughout the series, there is a number of actors who have voiced many numbers of characters. They include:
** Michele Burks as Katy Kat and Cheap Cheap the Cooking Chicken in ''[=PaRappa=] 1''.
** Armstead Christian as PJ and Papa [=PaRappa=] in both the ''[=PaRappa=]'' game and its 2001 sequel.
** "Sandra" as Instructor Mooselini, Chunky Burger Restaurant Manager, and vocalist for the song "Funny Love".
** Ryu Watabe as Joe Chin, Chop Chop Master Onion, ''[=PaRappa=] 1''[='=]s TV Announcer, [[CrossDressingVoices Ma-san]], and Captain Fussenpepper.
** MC King Kong Mushi's voice actor, Richard Bush, also does the voices of the Two Punks in both ''[=PaRappa=]'' games, and Chief Puddle in ''[=UmJammer=] Lammy''.
*** Dean Bowman, King Kong Mushi's [[TheOtherDarrin Other Darrin]] in ''[=PaRappa=] 2'', also does the Guru Ant.
** Freedom Bremner as Boxy Boy and Hairdresser Octopus in ''[=PaRappa=] 2''.
* UrbanLegendOfZelda: Rumors suggested that one could play as Sunny Funny or as Chop Chop Master Onion in the original ''[=PaRappa=]''.

!!''Anime''-only examples
* HeyItsThatVoice: Creator/KenichiSuzumura as Matt.
** Creator/NorioWakamoto, Creator/JurotaKosugi, Creator/YujiUeda, Creator/ShowtaroMorikubo, Creator/KotonoMitsuishi, Creator/KentaMiyake, and others also appear in smaller roles.
** [=PaRappa=] sounds like [[Creator/MiyuIrino a]] [[{{KingdomHearts}} certain Keyblade welder]]...can you guess who that might be?
* NoExportForYou: Why, Sony, why?! (It was, however, shown in the Central Europe region. With subtitles.)