In the Japanese version of Diddy Kong Racing, none of the boss characters outside of Wizpig are referred to by their original names and are instead simply translated to the names of their respective species.

• Tricky is called トリケラトプス (Torikeratopusu), which translates to "Triceratops"
• Bluey is called セイウチ (Seiuchi), which translates to "Walrus"
• Bubbler is called タコ (Tako), which translates to "Octopus"
• Smokey is called ドラゴン (Doragon), which translates to "Dragon"