Tweak Bunny is the engineer for the Octopod. It's her job to make sure that everything is shipshape below deck in the engine room and maintains all of the Octonaut vehicles. She has even invented a number of new machines for the Octonauts, along with a whole new Gup that was revealed in the Christmas Special, the Gup-X. She also invented the Gup-S in The Over Under Adventure. She as well invented the Gup-H which was seen in the The Poison Dart Frogs episode and the The Baby Sea Turtles. She invented the Gup i which was seen in The Emperor Penguins and The Operation Deep Freeze. She is working on new gups like the Gup-O, Gup-R, Gup-G, Gup K, Gup M and Gup Y. She also likes fixing and inventing things that sometimes work out in unexpected ways. She is one of the only two females on the Octonauts crew.(resembling the younger one)

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 sleeps without pajamas and has her toolbelt on when sleeping in her bed. 

She's not always down in the launch bay, though. Sometimes she can be found up in the garden pod growing her favorite food: Fresh carrots.

In both the original UK version and US version of the show, Tweak has a Southern accent when she speaks. It appears to be a lot stronger in the US version though (only in season 1).


Unusual for a rabbit, her fur is mint green. She wears a pink bandana on her head, a tool belt on her waist, and a pair of blue boots each with the Octonauts logo.

Other outfits


  • Her headband is dark purple in the book.
  • She sometimes calls Captain Barnacles "Cap".
  • Starting in The Emperor Penguins, she had the same sense of hearing as Professor Natquik
  • She grew up in Everglades, Florida with her dad, Ranger Marsh.
  • Tweak is kind of a tomboy, having grown up in the Everglades.
  • When frightened or nervous, her ears twirl together.

Octo Alert

When Captain Barnacles calls for an Octo-Alert, Tweak is usually found working on a machine or going over blue prints. But sometimes, she is found playing video games in her room, and when Captain Barnacles is coming down to the launch bay, Tweak is turned around with Tunip by the monitor.


  • "...Faster than you can say 'Buncha Munchy Crunchy Carrots'!"
  • "No worries, Cap!"
  • "Oh me oh my!"
  • "...Faster then you can say 'Buncha Munchy Crunchy...Fish Biscuits'!" (The Loneliest Whale)
  • "...Faster then you can say 'Buncha Munchy Crunchy...Ooh Frozen Carrots'!" (The Operation Deep Freeze)

Other Friends

  • Sandy the Leatherback Sea Turtle

Known Family


If you want to see more pictures of Tweak, See Tweak Bunny/Gallery.
Main Characters
Captbarnacles Kwazii Cat Peso Prof Shellington Profinkling Dashi Tweak Tunip Prof
Barnacles Kwazii Peso Shellington Inkling Dashi Tweak Tunip