Diamond City (race course)

Diamond City is a course in Mario Kart Arcade GP and Mario Kart Arcade GP 2.

Despite that E. Gadd does not appear in the Diamond City-based WarioWare games, his logo can be seen in the background of the course, which appears to house Gadd Science, Inc.. Several Magic Paintbrushes, one of E. Gadd's inventions, are also on display on this course. A statue of him is also shown in the beginning of the course.