Willy Bank is the main antagonist of Ocean's Thirteen. He is a successful and experienced hotel owner, whose every hotel has won a prestigious award.
He is a very successful hotel-casino owner notorious for exing his business colleagues in order to establish more ownership of whatever business they were to jointly run. He cones Reuben Tishkoff by being being forced to sign over the ownership rights of the new hotel-casino they were building together, "The Bank". Daniel Ocean offers Bank a chance to set things right, given his long history in Las Vegas and the fact that he shook hands with Frank Sinatra though Bank refuses.
To avenge Reuben, Danny Ocean gathers his partners-in-crime and plans to ruin Bank on the opening night of the hotel. They trick Bank into carrying a cell phone with a magnetron to disrupt the Greco. Rusty poses as a seismologist to tell Bank that an earthquake evacuation code is necessary for his new hotel, to which Bank reluctantly agrees to put in. As Benedict holds a grudge against Bank he offers Danny Ocean the funds only if they also steal four necklaces Bank bought representing the four Diamond Awards, worth some $250 million, now on display in a secured case at the top of the hotel. Basher distracts Bank long enough to allow Virgil and Turk Malloy to change the groups FBI records, including their names and appearances, to prevent being identified alongside Livingston.
Linus Caldwell seduces Bank's assistant to gain access to to the display and switch the diamonds with fakes. He is interrupted by the lead FBI agent, who explains the diamond left to Bank's assistant. Virgil and Turk Malloy use the drill to to simulate the earthquake and, with "The Greco" disrupted via the magnetron in Bank's phone, and guests leaving the hotel with their massive winnings because of the hotel's new earthquake evacuation protocol, Bank realizes his ruin.
As the guests evacuate the hotel outside, Bank cannot get revenge as he cannot prove that Danny Ocean did anything illegal and all of Bank's connections like Danny Ocean better then himself.