Pollux is a Gold who was a member of House Mars at the Mars Institute during Darrow's class. Pollux was loosely allied with Titus au Ladros, but turned on him to set Cassius free and help Darrow force Titus out. Darrow indicates that Pollux isn't particularly loyal, and that "he'll go whatever way the wind blows." (RR ch. 45). He fought on the side of the Bellona during the Lion's Rain.