Veteran sports writer Andy Robinson, who before resuming journalism spent a few years there Yooka-Laylee developer of Playtonic, it has very good news about how Banjo-Kazooie I got its name.
While visiting Japan recently, Robinson learned that earlier Nintendo president Hiroshi Yamauchi, who died in 2013, has a son named Katsuhito Yamauchi, whose name is usually shortened by the name "Katsuhi". And you have a grandson
Put it together and Banjo-Katsuhi becomes very fast Banjo Kazooie
Also Banjo Designer Grant Kirkhope:
As VGC Note in their story, both Katsuhito and Banjo became Nintendo's two biggest shareholders in the inheritance after Yamauichi's death.