These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Atomic Betty
Ass Pull: Some people considered the entire third season this as well as believing the unexplained reasons for Paloma hiding as this.
Cargo Ship: Betty's mom with a chair in "Love Bites".
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.
The Scrappy: 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.
They Wasted a Perfectly Good Plot: 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.