Answer
The answer is Katarina "Katarina" Waterfield, a character from the British science fiction television series Doctor Who. Katarina was a female humanoid alien and a member of the race known as the Sensorites. She first appeared in the 1965 serial "The Sensorites" and was portrayed by actress Maureen O'Brien. Katarina served as a companion to the series' protagonist, the Doctor, during the early stages of his travels in the TARDIS.