Lieutenant Tobias was the chief engineer on board the USS Intrepid (NCC-38907) in 2346. Tobias was part of a rescue team that responded to the Romulan attack on the Klingon world of Khitomer. (TLE novel: The Art of the Impossible)

Tobias was the father of Starfleet officer Tania Tobias. (TNG novel: Worf's First Adventure)

Intrepid personnel
Intrepid (Intrepid-class prototype)	C. Ramirez • M. Reed (alternate timeline)	Intrepid (NX-07, NX-class)	J. Lambert
USS Intrepid (NCC-1631, Constitution-class)	Garth • Spiak	USS Intrepid II (Constitution-class)	Setek • Sehlk • Si'jsk • Sobek • Suvuk • T'Kiha • T'Leiar • T'Noy
USS Intrepid II (Oberth-class)	Atherton • Clayton • Diver • Duchamps • L. McCoy • F. Mercier • Richards • Spock • N. Uhura
USS Intrepid (NCC-38907, Excelsior-class)	D. Dieghan • S. Rozhenko • J. Tavares • Tobias	USS Intrepid (NCC-74600, Intrepid-class prototype)	W. Emick • J. Hayek • D. Kaplan • T. Riley • V. Stadi