Ralf was owned by Richie Adler (Matthew Laborteaux), a computer hacker genius who attended Canyon High School with his buddies Hamilton "Ham" Parker (Todd Porter), Jeremy Saldino (Jeffrey Jacquet) and Alice Tyler (Andrea Elson).

Richie's room and electronic gadgets

An amateur detective, Richie often used RALF to track down information by creatively accessing a variety of private and government computer data banks.

Voice pattern of RALF greeting Richie

Richie also used the help of Lew Farley, (Max Gail), a reporter from the Los Angeles Gazette and Farley's brother-in-law, Lt. Neal Quinn (A. Martinez) who ran the police department's Mobile Data Terminals.

RALF and the cast of WHIZ KIDS