"Bill's Doughnut Disaster - SiIvaGunner: King for Another Day" is a high quality rip of "Bill's Doughnut Disaster" from SiIvaGunner: King for Another Day. It represents the King for Another Day Tournament contender Nintendo Power.
This is an arrangement of "Spotted!" from Yo-kai Watch, the track used in the official Nintendo video "YO-KAI WATCH – The Very Important Meeting Part 1", where Bill Trinen is possessed by the Yo-Kai Hungramps and furiously scarfs down doughnuts. The arrangement itself is also a reference to "Spotted! - Yo-kai Watch". Throughout the arrangement, samples of Reggie Fils-Aimé are heard: "Bill!? Bill!? Bill!?" from the aforementioned Yo-kai Watch video, "What's wrong with you?" from "Nintendo Direct 10.21.2011 - Reggie Fils-Aime Presents Nintendo Updates", "I'm gonna kick your ass!" from Reggie's appearance at E3 2014, and, at the end, "Oh, great! Bill, you're fired." from "Nintendo - Get Ready for E3 2015!".