M313 Elephant

Elephant The Elephant is a heavy United Nations Space Command mobile command and search & recovery vehicle to be featured in Halo 3. The Elephant appears to be the UNSC analog to the Covenant's Scarab or possible the Shadow and is aesthetically described as appearing to be like a Jawa Sandcrawler.

Specifications
This drivable vehicle appears to be like a mobile base: twelve soldiers can ride in it, it can house a Mongoose in its belly, and it is armed with a M41 Light Anti-Aircraft Gun towards it's front to the right side. It is a 3-storied vehicle (24 to 42 feet high). There is a hollow hold in its bowels that can store a Scorpion, a warthog, two Mongooses, and infantry inside. Also a second story that appears to feature a crane, its M41 LAAG for defending it and also a general elevated position where defenders can fire down at attackers that are on the ground near the Elephant, providing a strategic advantage for defenders. It appears to be in the same track set up of the Scorpion Tank with a set of four tracked bogies along its chassis. It's chassis appears as high as it is long, providing stability.

In multiplayer, it can respawn troops, and holds both the flag and the capture point for certain multiplayer maps on Capture The Flag mode.

Size-wise, it appears to be the largest land vehicle (besides the Scarab), towering over the Scorpion and the Wraith.

Trivia
Game ideas at Bungie.net are running rampant due to this vehicle, especially in combination with Forge. Of note, some forum members have suggested a non-game enforced rule gametype similar to Zombies called "Pirates", where the opposing teams each get on their own elephant and are not allowed to touch the ground, and blast at each other with explosive weaponry.

Even Frankie has had some ideas, like putting constantly exploding fusion cores inside an elephant with Forge so that it rolls around the map adding to the chaos of a normal game by flattening and smashing players who get in its way.