I am Master Chief Petty Officer John-117 of the UNSC Marine corps. My service tag is S-117 (or Sierra one-one-seven). I am one of the SPARTAN-IIs, a generation of augmented super-soldiers. In MJOLNIR Mk. VI armor I can sustain a heavy amount of damage thanks to my recharging energy shield. I have faced many enemies, such as The Covenant and The Flood. My best friends and teammates are Kelly-087, Linda-058, and Fred-104, as well as my fellow SPARTAN-IIs, though they all fell honorably in battle.