This is the third and special hero that you can get by purchasing a payed territory for real money. You can discover this hero on "Waypond" base that is 40th territory unlocked in the game.
It started when a buggy was driving around the sand dunes. But, when the car sunk into the quicksand, there was no other option but to use it to build a mobile sand castle. It’s even been equipped with a laser cannon. When damaged, it can be fixed with a bucket and a shovel.