How do you defeat the final boss in Patapon

Hit the other people in the back of the boss and once you get all of them then u win. it took me like 3 or 4 tries and then i beat it.Once you start you are playing you have a race with the boss for whoever gets to the prisinor. when u see his little companions start shooting. [P.S DO NOT UNDER ANY CIRCCUMSTANCES USE THE DEKAPONS]