Bub

Bub is a spoiled, bronze Bob-omb kid in Paper Mario: The Thousand-Year Door. He is always with his dad Goldbob and his mother Sylvia. Mario first sees him and his parents in Glitzville, then the Excess Express, and lastly at their home in Poshley Heights.

Bub wishes to work on a train when he grows up, possibly as an engineer. His fascination with trains is made obvious when he states that he would rather have an autograph of the Excess Express engineer for a birthday present rather than getting a car, a house, or an encyclopedia set (all three being things his parents thought he wanted). When Mario gets the autograph from the engineer and hands it over to Bub, the Bob-omb kid thanks Mario and rewards him with a Shine Sprite.

On the third day, Bub and his parents are among the passengers who are absorbed into a hoard of Smorgs that attacks the train. They are eventually freed when Mario defeats the Smorgs, causing them to blow away in the wind. With that, the rich family of Bob-ombs safely return to Poshley Heights.

When Bowser and Kammy Koopa visit Poshley Heights during an intermission after Chapter 7, Bowser can optionally talk to Bub, who will ask him for his name: Evil King Extraordinaire, Businessman of Legend, or Koopa Koot. If Bowser answers "Evil King Extraordinaire", Bub will become terrified and flee.

In Bub's trouble (posted at the Trouble Center in Rogueport), he gets into a fight with Sylvia and needs Mario's help to make up. He has written her a letter and wants any item listed within the trouble: Shroom Cake, Keel Mango, or Fright Mask; if Mario chooses Shroom Cake, he will need Zess T. to mix a Mushroom with a Cake Mix (bought from Pianta Parlor) to make one. After delivering the item to Bub, he makes a present out of the item and his letter, and asks Mario to deliver the present to Sylvia, which Mario does so. The letter reveals that the fight occurred because Bub did not do his homework. For solving the trouble, Bub rewards the player with three Coins, which he says are his "entire fortune", showing that Bub himself does not possess much money, despite Bub's overly generous parents and posh upbringing.

Tattle
Goombella has an alternate tattle for Bub when Mario takes on his trouble.
 * "That's Bub the Bob-omb. He's from a very rich family, so he's kind of spoiled. Still, kids are kids, no matter how big their trust fund is... Aren't they?"
 * "That's Bub the Bob-omb. He's from a very rich family, so he's kind of spoiled. He put in a request to help him make up with a certain someone."

Names in other languages
Bronzmuth Bomb-ottino