K'chak'!'op (or simply "Chaka" to those who could not pronounce her name) was a Pak'shree female who served as an enlisted computer specialist on the USS Titan under Captain William T. Riker in 2379 and 2380.
Chaka was often reluctant to leave her quarters (which were specially designed for her and "furnished" with a silk-like excretion from her own body) on board Titan because her size and shape often made it difficult for her to comfortably move around in the humanoid designed starship. Chaka did participate on an away mission to the asteroidal Vanguard station in Neyel space when extensive work on the stations computer systems was required. (TTN novels: Taking Wing, The Red King)
Chaka was convinced to leave her quarters and socialize more with the crew by the S'ti'ach counselor Huilan Sen'kara, who convinced her that her difficulties were no less than that of others on board.