Tom

Tom was a powerful long-horned cowfish Fishman, known as the most skilled shipwright in the world. He was also the teacher of Iceburg and Franky.

Appearance
Tom was a large cowfish fishman, with short horns and a yellow body. He had markings under his eyes, sharp teeth from his lower lip pointing upward, and a white beard. He also has a tattoo on his shoulder of a flowery design, which is sometimes mistaken as the Jolly Roger of the Sunny Pirates.

Personality
Tom was a proud and kind fishman, as he did not show prejudice against humans, which most of his kind do. He built many ships for people, and adopted Franky and Iceburg and mentored them in the art of building ships, as well as taking the blame for the Battle Franky's and be executed in exchange for a pardon for them.

Tom also believed that as a shipwright, one must always love his own creations, no matter what they had done. As such, he struck Franky for attempting to deny his responsibility in the Battle Franky's, and proudly claimed that he did not regret crafting the Oro Jackson for the Pirate King, despite it all being tantamount of confessing to crimes punishable by death. He also refused to hand over the blueprints for Pluton to Spandam, as a duty of his shipwright.

Abilities
Tom is regarded as the world's greatest shipwright, and has crafted the Oro Jackson and the Puffing Tom. His skills have been passed down to Franky and Iceburg.

As a fishman, Tom has incredible strength that surpasses humans by ten times. In fact, he seems to be much stronger than that, as he easily lifted a ship with one hand without showing strain.

Crown of the King
Before his life in Water 7, he lived on Fishman Island. At some point, he and Kokoro left there and moved to Water 7. Tom was later responsible for building the Oro Jackson, Gold Roger's ship. He also found Franky as a child after his pirate parents abandoned him.

The Trial Begins
After the death of Roger, he was arrested. Although building a ship for pirates is generally not considered a crime (as the shipwrights have no control over who mans their ships), a special case had to be made for Tom because his client was the Pirate King.

To escape what would be a cruel and unnecessary fate, Tom made an agreement with the judge: given 10 years, he could save his dying home city of Water 7, by constructing an unprecedented Sea Train which could traverse even the roughest of weather to deliver and receive goods and services. Thus, Tom's trial went into recess for a decade, to reconvene after the Sea Train's completion.

The Shipbuilders Secret
Tom's trial was also a front for another mission the World Government was undertaking at the time. They knew Tom was the holder of a copy of the blueprints for Pluton, an ancient warship of power so great that its name survived the passage of time (or perhaps the cataclysm that blotted out most of the world's history. This is the same Pluton that Crocodile was seeking in Arabasta.)

Tom's possession of the blueprint led other factions of the Government to seek it: of note, a man named Spandam, who was at the time working for Cipher Pol No. 5, a secret governmental organization not overseen by the Marines.

Spandam Moves
After Tom finally completed the Sea Train (taking 4 extra years to add extra rails), Tom was finally allowed to be pardoned for any crime he desired. However, Spandam was angry at the hassles of trying to get Tom to hand over Pluton to him, therefore, Spandam, in an effort to secure the blueprints, hired people to steal and man the ships of Tom's student, Cutty Flam, to attack Water Seven at the resumption of Tom's trial.

Though he knew Franky to be innocent, Tom took responsibility for the actions of his pupil's ships and decided to claim his pardon against the attack on Water 7. This action thus reinstated his original sentence and he once again was accused of building Roger's ship. Having overheard Franky disown his creations, Tom finally owned up to building the Oro Jackson; not only that, but claimed he was proud to have done so in order to show Franky the true meaning of being a Shipwright. Tom was escorted on the sea train he built to Enies Lobby, where he was allegedly executed shortly thereafter.

Trivia

 * Tom's favorite phrase to say was "Do it with a Don!"
 * In a recent Japanese Fan Poll, Tom is currently ranked the 83rd most popular character in One Piece.
 * Tom was incredibly strong. He could lift an entire ship with one hand without showing visible strain.
 * Like some of the other characters of One Piece, Tom had a unique laugh, his starting with a "Ta" (i.e. ta ha ha ha ha!).