Charlie worked at a film processing studio in Dick Tracy's city. He had light hair and wore eyeglasses.
When Junior Tracy was investigating the case of Thistle Dew and Uncle Punky, he canvassed the city's photo processing labs. Charlie recognized Junior and agreed to cooperated. Charlie's shop had processed the microfilm used by Thistle and Punky's accomplice Mrs. Peek, but Charlie was unable to provide much useful information about her (such as her address).