* HeAlsoDid: Takashi Thomas Yuda and Ken Okazaki, who voiced Fuse and Noize respectively in the Japanese version, are part of the creative staff for both games. Yuda works in animation and Okazaki contributed to the character design department. Rumor has it that Ulala is also voiced by one of Sega's staff members -- possibly Nahoko Nezu, the only female choreographer for the games, especially when she shares the same birthday and age as Ulala (when the game first came out).
* HeyItsThatGuy: Reporter Ulala is very recognizable for her pink pigtails and orange retro outfit, but hardly anyone knows her name/what game she's from.
* HeyItsThatVoice: [[Creator/AkiraIshida Purge]] plays as a certain yellow scarf bearing character in ''VideoGame/{{Persona 3}}''
** [[KingdomHearts He's also the master of illusion in a group of villains with mysterious powers.]]
** And in America, he's...[[SixthRanger Eric]] from Series/PowerRangersTimeForce?!
*** Not quite. Purge's english voice actor does Earthworm Jim in Earthworm Jim 3D.
** And Space Michael is quite literally MichaelJackson. He even ''looks'' like Michael Jackson!!
** Jaguar is voiced by Creator/ShowHayami in the Japanese version.
** Most of the Space Channel 5 Part 2 English voice actors voice characters in {{Driver San Francisco}}
** [[Creator/YoshikoSakakibara Pine]] once led a group of [[BubblegumCrisis hard-suit wearing mercenaries]], and also used to [[Anime/SailorMoon live in a cursed mirror as she tried to take over the world.]]
* TheOtherDarrin: In the English version of Part 2, all of the returning characters except Ulala (and [[MichaelJackson Space Michael]]) have different voice actors.
** FlashbackWithTheOtherDarrin: The intro of Part 2 shows several scenes from the first game. The voiceovers for these scenes have been redone by the Part 2 voice cast.
* PlayingAgainstType: [[Creator/ShowHayami Jaguar's Japanese voice actor]] usually does characters that are evil.
* PromotedFanboy: MichaelJackson loved video games, and after a SEGA exec showed him a build of their upcoming rhythm game ''Space Channel 5'', he was so enthusiastic about the project, he wanted to be a part of it. Although the game's near-finished state limited him to just a couple of lines, he had a much larger participation in its sequel.
* WhatCouldHaveBeen: Ulala was meant to have a cameo in ''VideoGame/{{Bayonetta}}'', [[http://www.segashiro.com/2010/04/03/ulala-vs-bayonetta-the-ultimate-sega-dance-throwdown but legal issues]] came up that prevented her inclusion.