Chris Seavor voiced all of the male characters in the game besides The Great Mighty Poo.

An unused laptop can be found in the game's files. The screen on the laptop says "Look sad people. Get a life now."

Marketing materials produced by Nintendo for Conker's Bad Fur Day, as well as the back of the game's box, went out of their way to refer to the game's alcoholic protagonist as having just turned 21 years old. However, according to a pitch document for the unmade sequel Conker's Other Bad Day, director Chris Seavor intended for Conker to have been underaged during the original game's plot, and the sequel would have taken place after he had turned 17-18 years old.