One of the Boy's 3 Guardian friends is the Elephant.
At the end of the designing process he was designed to look big and strong, and built like a tank.
I decided to give him wheels instead of legs so that he would be easier to animate, and it fits well with the character being part of the Boy's imagination.
The Elephant protects the Boy with his strong structure. His wheels allow him to gain speed and attack the Monster with a powerful stampede.
In the final render he will look like a soft toy with monster truck wheels.