Looks like Sonic who has gotten himself in the middle of the Legion of Doom's attack on Cantalot and after fighting them and realizes they were threat to everyone the blue hero summoned the 7 Chaos Emeralds and uses their power to transform into Super Sonic. However, Sonic didnt't know he tapped into a dormant and untapped region of power in the Chaos Emeralds' positive energy and when Sonic absorbed them his Super Form was transformed into a Super Blue form with levels of power and strength that one can't reach on their own. But Sonic did and now the Legion of Doom look in horror as Super Sonic Blue is awakened ready to start the final showdown! Super Sonic Blue style!

I wouldn't want to be in the Legion's feet right now!