Sergey Rozhenko was a 24th century Human who, along with his wife Helena, adopted Worf, who Sergey found on Khitomer as part of an away team from the USS Intrepid. Sergey was a Starfleet chief petty officer who served as warp field specialist aboard the Intrepid. After adopting Worf, the Rozhenko family ended up moving from their home on the farming colony on Gault to their home nation-state of Russia on Earth. (TNG episode: "Family"; TLE novel: The Art of the Impossible)

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