* AngstWhatAngst: Purge has had a pretty crappy past as a kid, and you'd think that he'd tell someone about it.
* BestBossEver: The boss from the fourth mission of the second game is a giant, apish, speaker-handed robot piloted by a mad scientist, and you have to use the power of Space Michael Jackson (voiced by Michael Jackson) to defeat him.
* [[ComeForTheXStayForTheY Come for the Ulala, stay for the Purge]]
* CrowningMusicOfAwesome: Well duh!
* DieForOurShip / ShipToShipCombat: If there's a discussion about Ulala x Purge and Ulala x Jaguar, things aren't going to be pretty, needless to say...
* DistractedByTheSexy: Whether it be Ulala, Pine, Purge or Shadow, you may get distracted by the characters' dance moves.
* DracoInLeatherPants: Purge does have a sad backstory, but fangirls take this to a whole different level. Remember fans: Purge does not comprehend love.
* EnsembleDarkhorse:
** [[TheRival Pudding]] is popular enough to be playable alongside Ulala in ''Sega Superstars Tennis'' and ''Sonic and All-Stars Racing Transformed''.
* EvilIsSexy: Evila, Purge, and Shadow for some.
* FanPreferredCouple: Ulala and Purge seem to be more popular than Ulala and Jaguar.
* FanonDiscontinuity: Blank's appearance in Extra Report 4 NEVER HAPPENED.
* FoeYay:
** Remember Blank's line about how he was always watching over Ulala? Well, that line's similar to the line on the wallpaper: [[FridgeLogic "I always want you watching over me."]]
** Purge with Ulala. [[DieForOurShip Needless to say, his fangirls don't care for Jaguar.]]
* ItsShortSoItSucks: Some complaints...at least until you realize this is actually ''quite'' hard! Not to mention, some magazines mentioned that you could beat both games in one afternoon...but ''didn't complain about the length''.
* MemeticMutation:
** Ulala has sometimes been remixed into challenging other characters to dance battles.
** The Evila battle is a common one, wherein people have remade it so she's challenging [[http://www.youtube.com/watch?v=F3GZDq8RSdw Dr. Robotnik]], [[http://www.youtube.com/watch?v=B0Seh1FutF0 Link]], and even had the entire fight [[http://www.youtube.com/watch?v=HvoiyltNgGk Recreated in the Gmod]].
** Sometimes, replacing [[http://www.youtube.com/watch?v=NYlJT7JG1bY Ulala's voice clips with other voice clips YouTube Poop style has been done]].
* {{Mondegreen}}:
** First time you hear "shoot" from the enemies in report 1 of ''Part 1'', it sounds like "Tits", "Kiss" or "Kick".
** In report 4 of ''Part 2'', when cheerleaders say "right", it sounds like "left". During the battle with Purge in the same report, you can hear a lot of "Damn!" or "Sheet".
** In report 3 of ''Part 2'', it sounds like [[DoesThisRemindYouOfAnything Pine is saying "Dirty" when she fires the Space Police's cannons, and Ulala sounds like she's saying "Clean" when she would normally say "chu".]]
* PolishedPort: The Steam version of Part 2. Originally falling under PortingDisaster, Sega went out of their way in mid-2014 to fix various dire issues with the game. The launcher no longer has issues saving settings, the entire game can be navigated with a controller, the game shows the correct prompts based on what you choose in the launcher, stability has gotten better, and syncing issues are practically non-existent. It did however remove the Japanese dub, but it was later reinstated along with Japanese FMV's, which the original port lacked. Combine all that together with gorgeous 1080p visuals, and it's by far the definitive version of the game.
* PortingDisaster:
** A very slight case. The rhythm is slightly "off" in the [=PS2=] version of the game, especially compared to the original Dreamcast game. A skilled player can adjust to it, but it is definitely noticeable enough to cause problems and has been commented on by a number of players.
* ThatOneBoss:
** Evila, Giant Evila and Purge the King have made many people toss their controllers.
** Blank TV can also be irritating at times, seeing as he has no exact rhythm. Also, if you screw up, he makes it EVEN HARDER. And you don't have many hearts to screw up with this boss.
* ThatOneLevel:
** The first part of the second level in ''Part One''. You have to rescue the space captain and the other staff members; which gets pretty hard when they send some ''fast'' commands at you. (Players recommend that, unless your thumb goes fast enough across the D-Pad, you use your two fingers)
** For that matter, ''any'' level where you have to either get delayed commands ("Up.....up hey!") or where they send a ''ton'' of commands at you. (There is one part in stage 4 in ''Part 2'' where you have ''twenty two'' commands to repeat!)
* ValuesDissonance: Part 2 has this a bit. In the Japanese version, Purge is actually mentally disabled/insane to the point where he can't function in society properly and has delusions that he's a messiah that has to save everyone by dancing. So instead of getting him help like any normal person would, [[WhatTheHellHero Ulala and the rest of the galaxy send him flying into space.]] [[AndThatsTerrible And even for a lighthearted series that shouldn't be taken seriously, that's terrible.]] The US version waters down Purge a bit, and makes him bratty so it feels like he got what he deserved.
* WhatDoYouMeanItWasntMadeOnDrugs
* {{Woolseyism}}: Ulala's name is a localization of Urara (See MeaningfulName), which is a common Japanese name. However, the pronounciation turns it into a pun, since they prounce it as "Ooh-la-la"...which is a phrase that is often uttered by people when they see beautiful women. Conveniently this is part of the game.
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