"Plans for a spiritual successor to Banjo-Kazooie, codenamed 'Mingy Jongo,' have been cancelled despite heavy fan support, according to composer Grant Kirkhope.
A group of ex-Rare employees, including Kirkhope, joined together in 2012 in hopes of making a game similar in kind to the first two games of the Banjo-Kazooie franchise: chock full of unique enemies, cartoony main characters and interesting “zones” to explore and collect in.
The game’s namesake came from an enemy in Banjo-Tooie: a robot creation similar to Mumbo Jumbo that went by the name of Mingy Jongo. It was never made clear whether Mingy Jongo would be the main enemy in the new game or not." - Mercer Smith-Looper