After spending some time in the United States Navy, Probert studied at the Art Center College of Design in Pasadena, California.
He designed the external fuselage attachments for the Airwolf helicopter, based on a Bell 222, as well as both versions of the internal Electronic Data Command Center, the show's iconic logotype and wolf insignia, flight suit costumes and other miscellaneous items within Archangel's office.
In 1984, he worked on Back to the Future, initially drawing storyboards but then continuing the design of the DeLorean time machine that had been started by Ron Cobb.
[2] During his one season stint on The Next Generation, he also designed the exteriors of virtually every other space vehicle seen in the first year of the show, including the Romulan Warbird.
On February 6, 2006, Perpetual Entertainment and CBS Media announced that Probert had been employed as an initial design consultant for the first incarnation of the MMOG Star Trek Online.