Movie
Description
Mr. 4, whose real name is Babe, also known as Catcher-Killing Babe, is a former officer agent of the criminal organization Baroque Works. He partners with Miss Merry Christmas and is the owner of a gun-dog named Lassoo, a weapon that ate the Inu Inu no Mi, Model: Dachshund, allowing it to transform into a dog that fires timed explosive baseballs. Mr. 4 is a large, heavyset individual with a round face, big lips, and dirty blonde hair. He typically wears a green shirt with the number four on it and black pants, and he carries a four-ton baseball bat marked with the same number.

In terms of personality, Mr. 4 is extremely slow and dimwitted. He rarely speaks, and when he does, he takes an unusually long time to articulate even a short sentence. He is utterly dependent on his partner, Miss Merry Christmas, for instructions and direction, incapable of thinking or acting on his own initiative. He laughs freely in a simple manner and shows no malice or deeper ambition beyond carrying out orders. His motivations are those of a loyal Baroque Works soldier: he follows the commands of his superiors, particularly Miss Merry Christmas, and participates in the organization's plan to destabilize Alabasta for Sir Crocodile.

Within the story of the film, Mr. 4 serves as one of the officer agents deployed to prevent Princess Vivi from reaching the rebel army. Alongside Miss Merry Christmas and Lassoo, he is assigned to capture King Nefertari Cobra earlier in the operation, and later they are stationed at the capital city of Alubarna to intercept the Straw Hat Pirates. Mr. 4 and his team end up pursuing Sanji and Tony Tony Chopper, but when Sanji leaves, Usopp joins Chopper in battle. The fight takes place in the city's south-east gate area. Mr. 4 uses Lassoo's explosive baseballs and his own immense strength to launch devastating attacks, while Miss Merry Christmas digs tunnels to create hit-and-run tactics. Despite their initial advantage, Mr. 4 is eventually defeated by Usopp and Chopper, who overcome the pair through a combination of trickery and persistence.

Key relationships include his partner Miss Merry Christmas, who functions as his brains and gives him all his orders. His dog Lassoo is both a weapon and a companion, and Mr. 4 uses the dog's explosive projectiles in concert with his bat. He also has a sibling, Miss Thursday, another Baroque Works agent. In the aftermath of Baroque Works' dissolution, Mr. 4 shows no further development; he is seen later working as a pizza delivery boy at the new Spiders Cafe, living a peaceful civilian life.

Mr. 4 possesses no Devil Fruit ability, relying entirely on physical strength and teamwork. His most notable ability is his superhuman strength, which allows him to swing a four-ton baseball bat with ease. He can hit Lassoo's explosive baseballs with great force and accuracy, sending them at opponents at high speed. He can also calculate the exact timing of each bomb's detonation, enabling him to direct them precisely. His main combat techniques are a rapid-fire volley called Yonhyappon Punk Knock, where he strikes a large cluster of explosive balls simultaneously, and a combo attack with Miss Merry Christmas called Mogurazuka Yonban Kosaten, in which she carries a captive past him for a direct bat strike. Despite his slow intellect, his physical power is noted to be superior to that of Mr. 3's team, though his low intelligence keeps his rank lower.