Individual humans appear to use whatever names they deem appropriate Sergeant Major Avery Johnson has referred to the Monitor 343 Guilty Spark as 'light bulb,' 'tinker bell,' and 'robot,' and both John-117 and Johnson simply shortened his name to 'Spark.'

The Covenant refer to the Monitors as Oracles. Monitors are extremely intelligent, yet completely devoted to their original function, and are zealous about containing Flood Monitors have been known to violently turn on their allies if they should attempt to violate their containment protocols. One of the main purposes of a Monitor was to be the caretakers of the Halo Array as well as other installations (such as the maintenance of Line Installations) and to ensure that the virulent Flood remain imprisoned.

Monitors are highly advanced Artificial intelligence constructs created by the Forerunners over one hundred thousand years ago to occupy special positions in Forerunner society.

Extremely strong casing, advanced energy shield capable of repelling all conventional weaponry.

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