Hyper Sonic is a super transformation of Sonic. It is much more powerful than his frequently-used Super transformation.
Sonic is able to go faster than his Super form, as well as his base form. His jump is higher, and he is able to use the special ability, Hyper Flash.
In place of his standard blue color, he flashes the colors of the seven Chaos/Super Emeralds.
Appearances in Games
Sonic the Hedgehog 3 and Knuckles
Hyper Sonic appears in Sonic the Hedgehog 3 & Knuckles as an unlockable form. Collect the Chaos Emeralds, and then go to Mushroom Hill Zone. The cutscene with Knuckles in this area is important; if you go into the area that he exited, you can upgrade your Chaos Emeralds into Super Emeralds! To do this, stand on top of one of the gray Emeralds and complete the Special Stage. After all of the Chaos Emeralds are upgraded, you will unlock Hyper Sonic. Collect fifty Rings and perform the Instashield. Note that you cannot transform into Super Sonic while you don't have all the Super Emeralds; Hyper is meant to replace/upgrade Super.
In order for Sonic to transform into Hyper Sonic, all seven Super Emeralds and the Master Emerald must be in proximity; after this requirement is met, enough Ring energy is required to actually transform.