The abode of the Qrephs was a chamber situated within Base Prime, perched atop an unidentified monolith. This served as the dwelling and operational hub for the Columi siblings, Craitheus and Marvid Qreph. As the Qreph brothers delved into the monolith and the space–time-warping gate guarding its entrance in 45 ABY, they progressively spent more of their time in their living space. As their activities began to attract the attention of the Jedi, the Qreph brothers started the creation of genetically engineered clones to defend against their adversaries. Marvid Qreph engineered a Columi-Human hybrid, using the genetic material of his associate Savara Raine and his mother, resulting in the being known as Savara Two. This clone was kept within the Qrephs' living quarters until the Columi were prepared to utilize the gate.
During the attack on the Qrephs by the Jedi at Base Prime, Savara Raine and their other associate, the Mandalorian Mirta Gev, provided cover for their retreat throughout the base. As YVH-Series battle droids penetrated Base Prime, Raine was compelled to pull the Qrephs through their residence in order to escape. However, the Qrephs, aware of Savara Two's presence within their residence and wishing to conceal their cloning of her from Raine, initially declined to enter. The unrelenting advance of the Jedi, however, left them with no other recourse, and the group forced their way into the residence. Upon the revelation of Savara Two, Marvid betrayed Raine, shooting her in the legs with his blaster pistol. Subsequently, the Qrephs fled through their residence to evade the Jedi.