* AwesomeMusic: The [[http://www.youtube.com/watch?v=MQ6YvFC6czQ&feature=related opening theme]]. A cute song that makes you drop your guard from all the wackiness installed.
** The [[http://www.youtube.com/watch?v=NRUPEk-_JqE theme song]] from the remake.
* EnsembleDarkhorse: Shortly after making his manga debut, Tsun Tsukutsun proved to be rather popular, especially with [[MrFanservice the girls]]. Though, having the ability to kick '''[[MemeticBadass Arale's]]''' ass when provoked kind of helps.
* FridgeBrilliance: The "angel" twins are found from an egg left by "God" to halt the progression of technology after seeing the disasters it caused on other planets. This makes ''a lot'' of sense in retrospect when one reads ''Dragon Ball'', where Goku and General Blue go to Penguin Village and Senbei expresses relief [[BreakingTheFourthWall to be in a Shonen Jump again]]. It is later revealed in Dragon Ball that "God" and "The Devil" are two aspects of the same being and that "The Devil" can hatch "Demonic" offspring from eggs he produces. Later still, it is revealed several planets have their own "God", meaning the god who tried to stop the advancement of Earth was likely the same one later seen in ''Dragon Ball'', which also explains the angel eggs. They were probably birthed by Earth's god the same way Earth's devil birthed demons.
* HilariousInHindsight: When Arale meets Donbe, a transforming fox, she claims that she can transform as well, and promptly spends [[TransformationIsAFreeAction the entire afternoon]] changing into an Ultraman costume. This almost feels like a retroactive parody of the TransformationSequence scenes in ''Dragon Ball''.
* IAmNotShazam: Nobody is named Dr. Slump. Senbei isn't even the main character, a fact lampshaded numerous times.
** Subverted in the unaired Harmony Gold English Dub where Senbei's name is changed to Dr. Slump.
* IconicCharacterForgottenTitle: In some countries (particularly Italy and Spanish speaking countries) many people refer to this series as "Arale".
* MoralEventHorizon: Dr. Mashirito crossed it twice. The first time was when he abandoned Obatchaman for being good, and the second one was when he tried to ''kill'' Senbei so way he'd never provide Arale and Obatchaman with Robo-vita-A.
** [[RuleOfThree Better make it thrice,]] as he [[KickThemWhileTheyAreDown beaten an energy-deficient Obotchaman with a stick and kicked him in a hole]] in the remake.
* {{Squick}}: Bubibinman eats ''poop''.
* TearJerker: The scene where [[spoiler: Arale realises that she will never grow up]] can be seen as this. Even if it lasts for few minutes, it can bring severe MoodWhiplash.
* WhatDoYouMeanItWasntMadeOnDrugs
* {{Woolseyism}}: The Mexican Spanish dub changes Arale's famous ''N'cha!'' with ''ĦQue Onda!'', who is the Mexican slang version of ''Wazzup!''
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