it is a rank in the spartan army and John (master chief) is not only the last spartan but he is also the only master chief
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Master Chief is a male.
master chief is totaly NOT A GIRL.OfcnStupid person
Master Chief is a Master Chief in the UNSC (A fictional branch of the military) and is the highest enlisted rank attainable.
Master Chief's ID number is 117.
no, Jun is... Jun... Master Chief's name is John...