Super Sonic is a form Sonic the Hedgehog takes, after obtaining all 7 Chaos Emeralds. This appears in Super Smash Bros. Brawl as Sonic's Final Smash.
When Sonic transforms, he gains the ability to float around the level at will. The transformation lasts for 15 seconds and he is completely invincible in this form. Any opponents he collides with will take 16% damage upon impact and very high knockback. It is similar in function to Pikachu's Final Smash, Volt Tackle, except that he cannot go through platforms like the Volt Tackle can, and has knockback unlike Volt Tackle.
Trophy Description
Sonic's Final Smash. The Chaos Emeralds give energy to all living things, and Sonic's gathered all seven of them, then used their power to transform into Super Sonic. His abilities in this form far surpass his normal ones, and he's even able to fly. He uses a lot of energy in this form, so he can only remain in it for a short time.