Creator Killer: Greenblat's stress with working on the anime (in which he was character designer and had no creative input besides), combined with the fact that he felt that he was unable to come up with anything as successful as PaRappa, effectively drove him out of the video game industry (although he with Matsuura attempted a failed comeback with the 2009 flop Major Minor's Majestic March).
Disowned Adaptation: The art designer for the games, Rodney Greenblat, didn't like the anime. It was too kiddie for him and he thought it was mediocre at best. Sony didn't allow him to be involved in the anime outside of drawing character designs, which also annoyed him.
No Export for You: Despite the video games great success there, the anime was never given an English dub and released in the USA. This probably relates to it being only a modest success in its home country. It was, however, shown in the Central Europe region with subtitles. There's a Latin American Spanish dub as well.
Old Shame: Greenblat was ultimately not satisfied with how the anime turned out, especially with his (or even Matsuura's) lack of creative input.
Screwed by the Merchandise: The anime was made to sell toys to kids but the series wasn't popular enough, so it finished at only 30 episodes.
Screwed by the Network: The anime wasn't successful with kids. It also had the misfortune of being in a time slot where it was often rescheduled due to baseball games.
Real Song Theme Tune: In the intro to the fourth stage right after the "I gotta believe" part, when the announcer is announcing Cheap Cheap's cooking show, a snippet of "Tijuana Taxi" by Herb Alpert and the Tijuana Brass (played in a slightly slower tempo) can be heard.
Role Reprise: Master Onion is the only character in the anime to retain their voice actor from the games, which also makes him the only character with the same voice in both English and Japanese.
Talking to Himself: 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.
Saundra Williams 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, 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 Um Jammer Lammy.
Dean Bowman, King Kong Mushi's Other Darrin in PaRappa 2, also does the Guru Ant.
Freedom Bremner as Boxy Boy and Hairdresser Octopus in PaRappa 2.
Urban Legend of Zelda: Rumors suggested that one could play as Sunny Funny or as Chop Chop Master Onion in the original PaRappa.