The Gambling King is a self proclaimed master of chance games. In reality he can only beat small children (and Soun Tendo and Ranma Saotome).
Ranma and Ukyo first met the Gambling King when they were children at a local fair. They decided to put a stop to his constant winning against the small children and decided they would beat him at his own game.
Unfortunately for them, the Gambling King was able to defeat them and in the process won the Tendo Dojo from Ranma. When this happened, Ranma and Ukyo rolled him up in a tatami mat and threw him into a creek.
Years later, King was able to track Ranma and Ukyo down and cash in his deed to the Tendo Dojo, which he quickly renovated into a casino. After Soun lost the rest of the Tendo home to the King, only Nabiki was able to find King's tell and beat him at his own game.
The Meaning Behind the Name
Bakuchioh King translates into "Gambling King". The King part of his name comes from the fact that he resembles the picture of the King that appears on cards.
Takeshi Aono & David Kaye
Takeshi Aono is probably best know as Piccolo Daimoh and Kami-sama of Dragon Ball and Dragon Ball Z fame. Some of his other roles include Rihaku in Fist of the North Star and Nobuyuki and Katsuhito Masaki in the Tenchi Muyo series. He also plays Shinnosuke Grandfather in the Ranma ½ OVA series.
David Kaye is one of the most frequently heard voices in English anime work. Besides Ranma ½'s Soun Tendo he is also Gundam Wing's Treize Kushrinada, Kim Kaphwan in Fatal Fury, Master in Maison Ikkoku and Sesshomaru in Inuyasha.