When Captain Barnacles calls for an Octo-Alert, Tweak is usually found working on a machine, going up a ladder from the launch bay, or going over blue prints. Snow Suit ( Operation Deep Freeze, The Emperor Penguins, The Giant Sea Spiders).Her ears had two blue hair ties on them (seen in photos in The Great Swamp Search). When she was a little bunny, she had a blue shirt and pants with a brown belt and boots with a pink bandana around her neck. Instead of a hat, she wears a pink bandana on her head, a blue tool belt on her waist equipped with a wrench and bearing the Octonauts logo, and a pair of blue boots. Unusually for a rabbit, her fur is mint green and has a tuft of fur on her head facing her left side. It appears to be a lot stronger in the US version, though this is only the case for Season 1. In both the original UK version and US version of the show, Tweak has a Southern accent when she speaks. She is best friends with Dashi and Sandy the Leatherback Sea Turtle. One time, she was found up in the garden pod growing her favorite food: Fresh carrots (as seen in The Baby Dolphin). She's not always down in the launch bay, though. She sleeps without pajamas and has her toolbelt and bandana on when sleeping in her bed. Unlike most of the other members of the crew that have rooms up in the pods, Tweak lives and sleeps where she works the most and that's down in the launch bay.

She is one of the three females on the Octonauts crew, with the other two being Dashi and Tominnow the Vegimal.

She likes fixing and inventing things that sometimes work out in unexpected ways. She likes to build and fix things, but she does not like how Kwazii or Shellington crash the Gups (mostly the Gups B and D) and is forced to fix them again as a result. She has even invented a number of new machines for the Octonauts, most notably the Gup submersibles. It is her job to make sure that everything is shipshape below deck in the engine room and to maintain all of the Octonaut vehicles.

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