The Grey Jinjo family was mentioned in Banjo-Tooie as being one of the ten Jinjo families in Jinjo Village. Unfortunately, their house was demolished by Hag 1 on its way to the Cauldron Keep and none survived. Obviously, because of this, they make no direct appearance in Banjo-Tooie.
- Because the Black Jinjo family, the largest living family, has nine members, most players believe that the Grey Jinjo family had 10 members due to the rising number pattern of members from one family to the next.
- Evidenced by many unused things in the game, it's shown that the Grey Jinjos had a larger role in gameplay, as there is an unused talk icon for them. There is also a removed Jinjo house with grey coloring (which is tagged "SHOULDN'T BE HERE" within the game's data).