Mark I

Mark I could refer to various items in the Halo universe:


 * MJOLNIR Mark I - The earliest prototype battle suit produced by.
 * HRUNTING/YGGDRASIL Mark I ADS - A powered exoskeleton jointly produced by and.
 * HRUNTING/YGGDRASIL Mark I (J) Green Machine - A variant of the standard HRUNTING/YGGDRASIL Mark I
 * Mark I prototype exoskeleton - A prototype exoskeleton, produced by the UNSC Navy during their earliest experiments into the concept.