Professor Groff
Professor Groff (left), with Dick Tracy

First Appearance:

July 3rd, 1932

Created By:

Chester Gould

Can Be Found:

The Complete Dick Tracy Vol. 1

Professor Groff was a scientist who helped Dick Tracy in the early days of the detective's career. He was bald and had a thick grey beard.

Groff specialized in X-ray technology that helped Tracy during the case of Alec Penn, the forger. Groff later helped discover evidence of Penn's real identity.