The Captain has a secret love of dancing along with the accordion. So multiple times, his crew has walked in on him busting out a couple moves, and they were impressed to say the least
Kwazii's tail is never still, it's always twitching, unless something scares or startles him, then it sticks straight up.
Peso has a tendency to hold the first person he sees tightly whenever he's scared, and they ALWAYS hold him back, he gives out hugs like MrBeast gives out money.
Shellington has a stutter, whoever dares make fun of it gets punched in the face by whoever on the Octopod hears it.
Dashi's tail wags whenever she's happy or very excited, she thinks it's embarrassing, but no one minds it.
Inkling listens to the Beatles, the Rolling Stones, and every other old rock band that exists
Tweak sleeps in WEIRD positions, she'll go to sleep curled on her side, and she ends up on the opposite end of the bed in the morning.
The Vegimals like doing gymnastics, but they have no balance. At all.
Koshi will always carry her books around with her like a little security blanket.
Squirt has things he's obsessed with, whenever he reads about something he thinks is interesting, that will be all he can think about for so long.Jane chews her nails, Dashi and their mother have tried everything, but it never works
Pinto wants to fly, he jumps into the air and flaps his flippers, trying to fly.

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The Odd One Out's Logbook
FanfictionYou might wanna read my first Octonauts story, "The Odd Sister Out before you read this one. headcanons and incorrect quotes based on the Octonauts and my OC, hope you enjoy!