Rocko

Rocko was a native of the world of O-Town who would encounter a stranded away team from the USS Voyager (NCC-74656) when the Delta Flyer wound up lost in a spatial rift. (Star Trek: Voyager - Dark Realm)

Biography
He immigrated to O-Town from Australia shortly after completing high school. His best friends were an anthromorphic steer named Heffer and an anthromorphic turtle named Filburt. 

Rocko was about twenty Earth years old when he encountered the Voyager away team consisting of Ensign Tom Paris, Lieutenant Junior Grade Henry Kano, Petty Officer Third Class Kenneth Dalby, Crewman William Telfer, and Crewman Tal Celes.

His best friend, Heffer fell under the sway of a schnitzel worshipping cult around the same time he encountered the away team and he would ask them for help. Receiving their aid, Rocko and Filburt hatched a scheme to distract the cult members long enough to rescue Heffer and allow Emmett Brown to sneak into the compound and rescue a captive Marty McFly and take the DeLorean time machine back from Biff Tannen's gang, who had co-opted the cult's support. Later he, Filburt, and Heffer were rescued when Rocko and Filburt's ruse to fool the cultists was discovered. (Star Trek: Voyager - Dark Realm)