I can tell you my vision of the story:

So far from here, there's a desert planet where is played a fighting game between monster controlled by a magician (maybe like hamlin, with a flute! or, in this case, with an accordion).
In the back of the monster, on the shirt, there's a number and an icon... like sport team

After the fight the winner stand up for some photos with his coach

Mad max really ispiring me for this, and also dune