One Piece Encyclopedia


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For the Color Walk, see One Piece Color Walk 7 Tyrannosaurus.

Tyrannosaurus is the name of a small mouse that Iceburg found and takes care of.[2]


Tyrannosaurus is a small, white mouse, with a long hairless tail, red eyes, and a cheerful look on its face.[1]

Most of the time he stands on his rear legs, keeping his front legs raised in a standard mouse pose resembling a Tyrannosaurus Rex, which probably gave him his name.

Over the last two years, he has grown to several times his original size, going from being able to fit in Iceburg's pocket to about the size of his master's head.

After the two-year timeskip he is seen wearing a collar as well as a small vertically striped suit.


Tyrannosaurus spends most of his time lying in Iceburg's pocket and squeaking happily when his master caresses him.[2]

He is apparently very loyal and attached to Iceburg, as he is always seen with him. During the fire at Galley-La Company's headquarters, instead of running away, he remained by his master's side, trying to wake him up with his squeaks in order to save him.


Water 7 SagaEdit

Tyrannosaurus is always seen together with Iceburg, he appeared the first time in his pocket, when Mikazuki was bothering Paulie at Dock 1, before being defeated by him and the other carpenters along with his crew.

When Iceburg met the Straw Hat Pirates, he said that he had recently picked up this mouse and then gave it the name Tyrannosaurus. He requested Kalifa to get Tyrannosaurus some rodent food and a cage, which she had already done for him.

During Iceburg's convalescence, he was always by his side, standing on his bed.

Later, during the fire at the company's headquarters at the hands of the CP9, instead of running away, he tried to wake up Iceburg, without success. He, alongside his master and Paulie, were fortunately saved by Tony Tony Chopper, and he spent all his others appearances together with Galley-La's president.

Where Are They NowEdit

He was later seen during Iceburg's audition for a new secretary, lying in his master's pocket as usual.[4]

From the Decks of the WorldEdit

Two years later he is still with Iceburg and his 10 year old secretary.

From the Decks of the WorldEdit

When Franky's new wanted poster reached Water 7, Tyrannosaurus was inside his master's pocket while Iceburg and his acquaintances looked at the poster.[5]


  • Tyrannosaurus was picked up by Iceburg not long before the meeting with Luffy. Iceburg also gave him his name during that occasion.[6]


  1. 1.0 1.1 1.2 1.3 1.4 One Piece Manga and Anime — Vol. 34 Chapter 323 (p. 15) and Episode 230, Tyrannosaurus debuts.
  2. 2.0 2.1 2.2 2.3 One Piece Manga and Anime — Vol. 34 Chapter 326 (p. 8) and Episode 231, Iceburg introduces Tyrannosaurus to Luffy, Usopp and Nami.
  3. One Piece Blue Deep: Characters World (p. 107), Tyrannosaurus's birthday is given.
  4. One Piece Manga — Vol. 50 Chapter 487, cover: Where They Are Now.
  5. One Piece Manga — Vol. 81 Chapter 816.
  6. One Piece Manga and Anime — Vol. 34 Chapter 326 and Episode 231, Iceburg introduces a little mouse he recently picked up to Luffy, and names the mouse Tyrannosaurus.

Site NavigationEdit

[v · e · ?]
Galley-La Company
Members: Iceburg  •  Paulie  •  Peeply Lulu  •  Tilestone  •  Tyrannosaurus  •  Zambai  •  Kiev  •  Tamagon
Members (undercover): Kalifa  •  Kaku  •  Rob Lucci  •  Hattori
Fighting Style Based: Rope Action
Related Articles
Story Arcs: Water 7 Arc  •  Enies Lobby Arc  •  Post-Enies Lobby Arc
Mini-Series: Where They Are Now (Part 2)
Locations: Water 7 (Dock 1  •  Galley-La Headquarters)
Misc.: Tom's Workers
[v · e · ?]
Animal Species
Four Blues
East Blue: Pinky
South Blue: Blue-Finned Elephant Tuna  •  Super Sparrow
West Blue: Island Whales (Laboon)
Grand Line
General: Royal Squid  •  Sea Monkey  •  Sea Cow (Mohmoo)  •  Giant Seaturtle  •  Sea Rabbit  •  Kappa Whale
Island Specific: Dinosaurs  •  Kestia  •  Goldfish (Island Eater)  •  Giant Dolphin  •  Hiking Bear  •  Lapahn  •  Reindeer (Tony Tony Chopper)  •  White Walkie (Robson)  •  Snow Birds  •  Camel (Eyelashes)  •  Bananawani  •  Moving Crab (Scissors)  •  Banchi  •  Super Spot-Billed Duck (Carue  •  Super Spot-Billed Duck Squad)  •  Kung-Fu Dugongs  •  Sandora Catfish  •  Sandora Lizard  •  Giant Sandora Lizard  •  Sea Cat  •  Warusagi Birds  •  Desert Strawberry  •  Giant Gecko  •  South Bird  •  Sumo Frog (Yokozuna)  •  Yagara Bulls  •  Rabuka Bulls  •  King Bulls (Sodom  •  Gomorrah)  •  Humandrills
White Seas: Sky Fish  •  Sky Shark  •  Sky Eel  •  South Bird  •  Cloud Wolf  •  Giant Python (Kashigami  •  Nola)  •  Speedy Shrimp  •  Super-Express Speedy Shrimp  •  Fuza  •  Octopus Balloon
Global and Other Animals
Sea Kings: Lord of the Coast  •  Master of the Waters
Den Den Mushi: Regular Den Den Mushi  •  Baby Den Den Mushi  •  Black Den Den Mushi  •  Golden Den Den Mushi  •  Silver Den Den Mushi  •  Surveillance Den Den Mushi  •  Visual Den Den Mushi
Calm Belt: Snake Weapon (Salome)  •  Yuda  •  Blue Gorillas  •  Puzzle Scorpion  •  Manticores  •  Basilisk  •  Sphinx  •  Wolf Unit
Unknown Origin: Dragon  •  Panda Shark  •  Hattori  •  Flying Fish  •  Surume  •  Sea Lion  •  Monstar  •  Daidalos
Merveille: Scarlet  •  Fat Lion  •  Land Gator  •  Mori Dako  •  Don Kamakiriri  •  Terror Guma  •  Guntai Ari  •  Baku Zame  •  Screen Buffalo  •  Billy  •  Shimatori  •  Zarley Davidson  •  Black Brothers  •  Boxer Penguin  •  Big Tree  •  Tsujigiri Itachi  •  Kung-Fu Dot  •  Batta GT-7000  •  Hippo Iron  •  Monkey Trooper  •  Boss  •  Agehaguera  •  Batch Fly  •  Cowball  •  Del Kong  •  Erimakitokageps  •  Ettousaurus  •  Groggysaurus  •  Hammer Isoginchaku  •  Ikahula  •  Jura Chou  •  Kaen Kabuto  •  Kill Rabi  •  King Umi Mukade  •  Kubinagaryuu  •  Mammoth Dense  •  Maou Game  •  Meteor Ibex  •  Miyama Emperor  •  Shogun Jishi  •  Spider Tank  •  Toramata  •  Oh Imomushi  •  Dasoku  •  Giragon  •  Seiuchi Mountain  •  Golden Bat
Non-Canon: Giant Gecko  •  Kirin Lion  •  Bald Parrot  •  Karasuke  •  Horn Eaters  •  Trumpet Pig  •  Square Rhinos  •  Sea Raccoon  •  Rosario  •  Mecha Island  •  Bolt  •  Kinoconda  •  Elizabeth  •  Bonbori  •  Chavez

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