Known Family[]
Ranger Marsh[]
Ranger Marsh is Tweak's father and a park ranger in the Everglades of Florida. She used to help him find critters in the swamp with her ears when she was young, but when she started inventing things, he didn't quite understand the use of them. That is until she used one of them to save him when he got stuck in sticky mud. They appear to have an excellent father-daughter relationship overall.
Friends/Acquaintances[]
Captain Barnacles[]
Being Octonauts for quite some time, Captain Barnacles and Tweak have a good friendship. Tweak always knows what inventions are best for missions, including the Gup-X that she gave as a Christmas present for him. Barnacles is impressed by her inventions and always ready to use his polar bear strength to help her.
Kwazii[]
Kwazii and Tweak usually interact most outside of missions, but whenever together they serve well. In Season 1, Tweak is shown to be more frustrated with him, whilst Kwazii shows less of a regard for Tweak's work when accidentally damaging or losing the Gup-B. Overtime, their relationship develops, and Tweak is shown with more patience for Kwazii, and he returns that by being more considerate of Tweak and her efforts. In The Ring of Fire, they go to the Octo-Repair Station to give the Gups their tune-ups. When tremors start shaking things up and collapsing and flooding the station, they work together to avoid getting crushed and escape to the Z-Gup 1's hanger so they can escape. Kwazii learns a few engineering skills from her, and Tweak learns from him on how to think like a pirate. From the Ring of Fire film and Season 5 onwards, Kwazii and Tweak can be found in each other's company much more frequently. Kwazii will stop by the Launch Bay or the Repair Station to see what Tweak is up to, usually followed by him expressing excitement and admiration in Tweak's craft, showing a respect and interest in what she does. She receives Kwazii's praises joyfully and likes surprising him with things that make him excited. Kwazii has affectionately received the nickname "Kwaz" from her, similar to how she refers to Captain Barnacles as "Cap." She has the tendency to say his "YEOW!" catchphrase (in The Tiger Shark and The Ring of Fire), which he either receives positively, or gets annoyed that she said his line.
Peso[]
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Shellington[]
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Dashi[]
Tweak and Dashi are close friends as they can be seen together working with each other or helping each other all the time but nobody knows how far their friendship goes. Episodes have shown at times they can be very worried about each other in serious situations, one example being in The Gulper Eels.
Professor Inkling[]
Tweak and Professor Inkling usually don't talk as much in the episodes. However, Tweak cares for him, being Octonauts for a pretty long time. One example was when she built him a special suit, giving him the chance to join the others on land missions in Season 5 without hurting himself.
Tunip and the Vegimals[]
The Vegimals can be seen helping Tweak sometimes. In A Very Vegimal Christmas, they create the Gup-V, showing how they learned and were inspired by Tweak.
Beaver Family[]
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Paani[]
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Pearl[]
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Periwinkle[]
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Selva[]
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Creatures[]
Sandy the Leatherback Sea Turtle[]
Sandy is a leatherback sea turtle and one of Tweak's best friends. They met with each other a while ago, but they rarely see each other because Sandy is always traveling about the currents in the ocean. Still, they are always happy to see each other when they have the chance.
Tom[]
Tweak first met Tom the Tiger Shark in the episode of the same name. He chased Sandy and damaged the Sandy cam, so Tweak went after her in the Gup-B. Soon enough, Tom tried to eat Tweak like he tried to do with Sandy. She did all she could to evade him, but she crashed and ended up trapped in a cave with him. His stomach was hurting so bad, so she asked him to get her out of the cave so Peso could get rid of the junk in his stomach. As he departed, she gave him carrots to eat.
Saul[]
In The Over and Under Adventure, Tweak went with Dashi under the ice into the Antarctic Ocean and met Saul as he was slowly traveling across the seafloor. She became more concerned of him when he lost an arm to an Ice Brinicle. But was assured he would grow it back slowly.
Burmese Python and her Hatchlings[]
The mother python was an invasive species in the Everglades, and when fires started, she allowed Tweak and the Octonauts to help her and her children. Tweak wanted to save her dad from sticky mud, but she would have gotten lost in the murky water. Luckily, the Burmese Python agreed to help get her underwater to get to Ranger Marsh. They helped her and her hatchlings to safety and she was grateful.
Lucille[]
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Klaus the Yeti Crab[]
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The Kea Birds[]
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Lula Mae, Little Tex, and Their Swarm[]
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Fire Ants[]
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Ronald and Mama Okapi[]
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Debbie the Honey Badger[]
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Orangutan Family[]
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