Rebecca

Rebecca is the A.I. of the UNSC Red Horse. Rebecca replaced the former ship's A.I., Chauncey. She is the only known A.I. to have two appearances. Her first appearance is described as "half-Athena, half-Ares" with a feathered Greek headdress and ancient armor. She then changed her appearance to a flabby, middle-aged Mediterranean woman in a flower dress.