Chloe is named after Butch Hartman's niece, who is called Khloe.
Chloe's bow and sandals were originally going to be pink, before they were eventually changed to purple.
Due to the definition of overachieving, it shows that she is excellent in academics, among many other areas. This can be seen in the many trophies and first place ribbons in her room.
She knows 12 languages, including communicating with dolphins.
The languages she is currently known to speak are: English, Russian, Dolphin, and Flightless Booby Bird.
It's implied that Chloe is good at cooking, with the exception of lemon squares, which tasted like cockroach spray.
She is obsessed with helping other people.
Chloe's first wish was not for herself, but for the sake of others.
She seems to have really low-self esteem, as she easily feels upset about ruining everything whenever she just wants to help.
Chloe having a gap in her teeth mirrors Timmy's buck teeth.
Before she left to go to Maine with her parents, she convinced Jorgen to make it okay for Timmy's closest friends (who can be trustworthy), to see his fairies in plain sight, that way Timmy will hang out with both his friends and fairies without having to hide any secrets. This was mentioned in both The Night Magic Died and To Be or Not to Be Iced.
She is slightly taller than Ivan, Timmy, Chester, A.J. and anyone else their size.
She has the same birthday as Timmy and his twin sister, Timantha.
Chloe has the same last name as Susie Carmichael from the fellow Nickelodeon series, Rugrats.
Before she and Ivan lost their fairies, Chloe's last wish was for world peace.
As an adult, Chloe seems to inherit her mother's hair style, albeit slightly longer in the back.
As a teenager (in the series finale) and adult, Chloe owns a yellow motor scooter that looks similar to a Vespa SS 180, which is similar to the Vespa owned by Haruko Haruhara in FLCL, who was voiced by Kari Wahlgren in the English dub.
Chloe, along with Trixie, secretly supports Timmy and Betty as a couple.