* CastTheRunnerUp: Creator/MonicaRial auditioned for Amy before she was cast as Jo.
* TheOtherDarrin: In the English version:
** Kazami, one of Kyo's friends, was voiced by Jessica Dismuke in episode 7 and replaced by Creator/LuciChristian in [[BeachEpisode episode 15]].
** Shirley was voiced by Ashley Moynihan in the TV series but was replaced by Creator/CheramiLeigh in the ''Infinity'' [=OVA=].
* PlayingAgainstType: In the dub, Creator/MonicaRial was intentionally cast against type as Jo. In the DVD Commentary, she mentions that she went in to audition for Amy and the director ''wouldn't let her''. Creator/AlisonViktorin ended up voicing Amy.
* PortmanteauSeriesNickname: "Bakuten".
* WhatCouldHaveBeen: As mentioned in the PlayingAgainstType example, Creator/MonicaRial was considered to voice Amy.