A horny, whiney imposter pretending to be the real Master Chief and dicking around on Paramount's Halo TV series. Master Cheeks got his name for refusing to wear his helmet and now his pants, baring his "master cheeks" around in episode 3 and 8.
Lord Hood: Master Cheeks, you mind telling me what you're doing with that Covenant chick?
Master Cheeks: Sir, finishing this fuck session.