The Cohbo family represented one of the many families within the Chiss Ascendancy, which served as the governing body for the Chiss species. A Chiss male named Bomarmo belonged to this family. Prior to 18 BBY, Irizi'rik'ardok, who hailed from the Irizi ruling family, became a part of the Cohbo family through marriage to Bomarmo, an event described as having joined. Following their union, they established their home on the planet Ool, where they managed and operated the Ardok Ranch.
The Cohbo family made its debut within the pages of Thrawn Ascendancy: Lesser Evil, a novel penned by Timothy Zahn in 2021. This novel serves as the concluding installment of The Ascendancy Trilogy.