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Were you looking for the original M274 Mongoose, featured in Halo 3, Halo: Reach, Halo 4 and Halo 2: Anniversary?
Lovingly dubbed the “mothergoose” by frontline infantry men and women due to its increased size over the M274, this particular variant shown is Liang Dortmund's heavy-duty modification of the standard M290 ATV. The result is a nimble but rugged Mongoose with extra armor.
— Official description, Canon Fodder


The M290 All-Terrain Vehicle, also known as the Mongoose, is a UNSC light ground reconnaissance vehicle, introduced in the post-war era as a replacement to the outdated M274 Mongoose. It goes by the colloquial names of 'Mongoose' or 'Mothergoose'. In addition to the standard variant, a variant with twin mounted driver-controlled grenade launchers exists, called the Gungoose.

Changes from the M274 MongooseEdit

  • A weak spot has been added; an air intake on the Mongoose's hood.
  • Multiple variants of the Mongoose have been added for use in multiplayer.