I disagree with all the people who think that Super Sonic is a ripoff of Super Saiyan.
It's not, for these differences! 1. Super Saiyans could activate their Super Form whenever they want. Sonic can only activate his Super Form when he has all 7 Chaos Emeralds. 2. Super Sonic is practically invincible in his Super Form and doesn't take damage normally. Super Saiyans, although stronger than normal, aren't invincible and can still be damaged and injured by conventional means. 3. Super Saiyans have multiple different stages to it, like Super Saiyan 2 and Super Saiyan 3. Super Sonic does not, just one Super Form that's ultra strong.