In the first two seasons it is assumed that those with the title "Professor" are the successive Heads of the CONTROL Laboratory, while "Doctors" are generally charge of a specific department. The exception is Dr. Simon, who appear to have taken over the functions of Lab Head in 1968.
Pre-History[]
Professor Bush (retired)
- Dr, Drago (dismissed)
Season One[]
- Henry Ratcheck
- Alma Sutton
- Saunders
- Dr. Minelli (special weapons)
- Dr. Stueben (psycho-research)
- Bellamy
Season Two/Three[]
- Smithers (deciphering)
- Dr. Hans Svenson (hormone research)
- Dr. Waldo Smith (chemist)
- Finletter (Smith's assistant)
- Dr. Harris (cybernetics)
- Dr. Bascomb (crime lab)
- Dr. Steele (toxicology)
- Forsythe (decoding)
Season Four/Five[]
- Schleppenheimer (inventor)
- Lum Fong (codes and cyphers)
- Kensington (decoding)
- Felix (photolab)
1995 Series[]
- Duane (technician)