Wikipedia
C'rizz
C'rizz (pronounced as "KEH-riz") is a fictional character played by Conrad Westmaas in a series of audio plays produced by Big Finish Productions based on the long-running British science fiction television series Doctor Who. A Eutermesan from the planet Bortresoye, which exists in a parallel universe, he is a companion of the Eighth Doctor.
He is mentioned by the Eight Doctor in the mini-episode " The Night of the Doctor".