* AssPull: Some people considered the entire third season this as well as believing the unexplained reasons for Paloma hiding as this.
* CargoShip: Betty's mom with a chair in "Love Bites".
* CrowningMomentOfHeartwarming: Several moments "The No-L 9" would qualify.
* EarWorm:
** The main theme.
** Anything on the album, really.
* HoYay: Sparky and X-5. One episode had Sparky dress like a blonde cheerleader, and he dragged an unwilling X-5 and introduced him as a boyfriend. Another episode had this exchange:
--> '''Sparky (talking about Betty rescuing Noah):''' "'He's not her boyfriend.' Yeah, right!" ''turns to X-5'' "Would you kick that much booty if that were me dangling up there?"
--> '''X-5:''' Not particularly.
** The valentines episode combines this with FoeYay.
* JerkassWoobie: Penelope in "The Market". Her cat died and she only abducted that JerkAss raccoon to fill the void.
* MarySue[=/=]CanonSue: Betty to an extent; name one bad quality about her, just one.
** The fact that she is always antagonistic to Penelope even when Penelope herself isn't going out of her way to antagonize Betty maybe?
* NightmareFuel: Maximus IQ when he temporarily becomes his OneWingedAngel form in "Amulet of Shangri-La-De-Da"
** Another was in "The Ghost Ship of Aberdeffia", during the story Betty tells, the Bangoons arrive to where the ghost ship was. However, once the ghost appears...just the captain ghost...and worst was, he was crying out for his lost love in a hauntingly voice. And this troper couldn't sleep for days afterwards.
* {{Squick}}: Betty's dad attempting to do goodness knows what with Purrsy while under the effects of a love spell, as well the suggestive stuff he says while chasing him.
** One word: [[BrainBleach EW!]]
* TheScrappy: A lot of people dislike (and even flat-out despise) Penelope for a good reason. Her attitude half the time and especially on season three is the reason many people nearly stopped watching Atomic Betty.
* TheyWastedAPerfectlyGoodPlot: They never really did much with the fact that Betty, her mom and Beatrixo all have alien DNA due to Beatrixo's father being an alien. Only Beatrixo's sister Auntie Matter displays alien powers.
** The same can be said for the whole Paloma plot point and the reason why she never informs Betty.
*** Also count as TheyWastedAPerfectlyGoodCharacter for Paloma's part.
** Noah found out Betty's secret and joined the Galactic Guardians, but the show never really did much with him in that role except the same old jokes he was already the butt of.
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