Yojimbo is a tuner.
In Tokyo Mater, Yojimbo is the "Second" Tokyo counterpart of DJ. He has a built-in sound system and is seen playing music during the dance scene at the end. His paint job has a white tiger-like paint on the bottom, and a dragon on one side.
Hi is a fictional Reko-Do Spinner. In the real world he is a 2004 Scion XB.