Bizarro Episode: The "Flying Bathtub" episode is notably weirder than the other episodes, and breaks the normal formula: Unlike normal episodes, it's Bello and Mina who have a wacky adventure together, not Bello and Goomo, and in that respect is sort of also a role reversal. There's a rap sung by the characters, not a pop number by Guille Milkyway like usual, the plot revolves around a literal flying bathtub and a brief scene involves a tap-dancing basketball.
Cult Classic: Jelly Jamm only aired two seasons and hasn't been heard from since 2013. A decade after its premiere, it still has a number of dedicated fans who actively talk about the show.
Fanon: Ongo being on the autism spectrum is a common theory among fans, due to him being mostly nonverbal and showing a few traits autistic kids also have, such as collecting sounds.
A number of Jelly Jamm fans are also at least aware of the existence of, if not fans of (of all things) the Puyo Puyo video game series, probably because of their similar light-hearted, wacky natures. The fact that Ongo from Jelly Jamm and Maguro from Puyo Puyo look similar to each other with their prominent purple color schemes and hair that keeps their Eyes Out of Sight hasn't gone unnoticed, either.
Many fans of this show also tend to be fans of Ready Jet Go!, due to their shared quirky nature and use of music. Plus, Mina loves science just like Jet and his friends.
Les Yay: While you can interpret Bello's and Goomo's close relationship as just a friendship, it's really hard to deny the subtext between Mina and Rita in "Home, Flying Home", which included Mina moving into Rita's house for a week, them spooning in bed and Rita undressing Mina in her sleep to wash her shirt. What follows is them trying to live a week together, which goes horribly because of their different lifestyles. After getting into a big fight, Rita discovers that Mina tried the whole week to make a tea that changes colours specifically for Rita, and Mina realizes that despite their differences, she really likes Rita as well. They decide to spend another week together as roommates.
Bello sounds like Horrid Henry.Explanation Back before the new COPPA regulations forced YouTube videos aimed at children to disable comments, you were almost guaranteed to find a comment that said something along the lines of this. The similarity of their voices is due to both of the characters being voiced by Lizzie Waterworth-Sante.
"Po, është vërtet shumë për të qeshur"note There is an unlicensed Albanian dub of the series where Ongo speaks coherently, rather than his usual mix of babbling and sounds heard in every other version. Yes, it's as jarring as it sounds. This specific line, roughly translating to "Yes, that's really very hilarious", has gained some popularity among fans.
Never Live It Down: Several viewers consider Ongo laughing at Bello for his eye injury in "One-Eyed Bello" to be pretty low for him. What doesn't help is that Ongo was the one who injured Bello to start with (it was an accident, but Ongo doesn't seem to regret it much).
Spiritual Successor: Can be seen as one to The Backyardigans, since they both have multicolored characters, heavy focus on music, and a Minimalist Cast. Ongo in particular is very similar to Austin, being a purple character who wears shorts and a t-shirt with a stripe and is known for being demure and having limited appearances.
They Wasted a Perfectly Good Plot: Due to the show being set on a planet that's the source of all music in the universe, one would think they would go all out teaching kids about different musical methods and terminologies and things like that, but instead, the show opted to just teach kids generic life lessons you would see in other preschool shows.
Ugly Cute: Goomo looks noticeably more goofy than the other kids, but he still manages to be very adorable.
Viewer Gender Confusion: Due to his haircut, his gender-neutral clothing, and the fact that he's purple, a couple fans thought Ongo was a girl.
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