Noble One

"I need you in that fight, Noble One... Noble One, come in... Noble One, do you read me?"

- Unknown UNSC commanding officer

Noble One (true name unknown) was the term of address for an unknown person involved in the Battle of Reach.

In the Halo: Reach announcement trailer, Noble One is repeatedly hailed by his/her commanding officer, but does not respond: eventually, the transmission is interrupted when Sierra-259 calls the officer.

It is possible that Noble One was killed during the Battle of Reach, left or deserted the battle or was otherwise incapacitated. It is also possible that Sierra-259 is the person being referred to as 'Noble One'.

As suggested by the License Plate Eggs in Halo 3: ODST, Noble One might be a Spartan, numbered 220.

Code name
There have been problems determining the codename of this individual. Such possibilities were "Nova-one", "Noble-one", and "Number-one". An L sound can be heard, and so suggests it must be "Noble-one".