green flag twice. sometimes the sounds don't work well. i this is definitely not upbeat as you wanted, but at least i have a dragon and yellow and blue colors change the color of the dragon to whatever you want. i dont know what color would work so i'm leaving it to you. or you could make your own dragon
one of the sounds in https://scratch.mit.edu/projects/674415901/. i had to change it a little to make it work better you can add better music if you want. i didn't know what to put in so i just took a part of counterattack from xc2 as i always do when i cant find better music.