* CreatorBacklash / OldShame: Both Arlene Klasky and Gabor Csupo have stated ([[OrSoIHeard though not fully confirmed]]) that if they return, they would rather write more ''{{Rugrats}}'', than return to ''AllGrownUp'', due to the fact that [[ExecutiveMeddling they were pretty much forced to do this show.]]
* CrossDressingVoices: Tommy, Chuckie, Phil and Dil are all voiced by women.
* ExecutiveMeddling and OutOfOrder: The season 1 episode "Lucky 13" was held over from airing until August 11, 2004, which marked the 13th anniversary of when ''Rugrats'' had premiered. A few season ''2'' episodes premiered before "Lucky 13".
* FakeNationality: Chuckie pretends to be a foreign exchange student from Latvia to impress Nicole, coupled with AsLongAsItSoundsForeign.
* HeyItsThatVoice: [[Series/{{Firefly}} Shepherd Booke]] is Susie's father.
** Creator/TaraStrong plays Dil.
** [[Creator/ClancyBrown Principal Pangborn]] is [[SpongebobSquarepants Mr. Krabs!]] and [[SupermanTheAnimatedSeries Lex Luthor]].
* TheOtherDarrin: Notably averted. Everybody had the same voice actors as they did at the time on ''Rugrats'' (Joe Alaskey and Nancy Cartwright had taken over for David Doyle (dead) and Christine Cavanaugh (retired) already).
* ScheduleSlip: A year went by between the first two episodes of season four. Another year went by between the second and third episodes of the same season, after which the rest of the series was burned off on a daily basis for three weeks until it was pulled again with three episodes left. Those three were aired nine months later.
* TalkingToHimself: Like in the original series, Phil, Lil, and their mother are voiced by Creator/KathSoucie.
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