Noble Six was a Spartan. A killing machine, made that way ever since she saw her parents burn as a child. And that's all she thought she was, until she's forced from an altered Operation: UPPERCUT into a world of chaos, one that has more than enough killing machines to go around. That being said, one more ally couldn't hurt Diamond Dogs. At least...as long as they stay an ally.

Told by Catherine Halsey to some spooks (cut part of/intro of Halo 4). This is how the Mantis walking tank became widely used by the UNSC and its contingencies in 2556, taking place during the years the Master Chief was in cryogenic stasis... "They never told you? What else they were developing on Reach?"

Khamsin is really bored. Fortunately for him, a once in a lifetime event will cure him of his boredom.