Board Thread:Questions and Answers/@comment-25366336-20160108184236/@comment-679780-20160108193518

1. Yes. I think he can cancel his form by "will". However gameplay wise his transformation lasts for as many rings he has on him.

2. Yes. To "become" Super Sonic, Sonic has to collect all the seven Chaos Emeralds. Afterwards during play you need to collect 50 rings. You then press the action button (sometimes after a jump) to turn into Super Sonic.

3. Not in a sense "put on", like most video games invokving collectibles (Such a sMario's coins, Link's rupees and so on) Sonic keeps rings on himself which we can only see by a counter on the game HUD. Every second as Super Sonic costs 1 ring per second (a fair exchange for additional superspeed and invincibility) You can collect rings to sustain Super Sonic but once he reach 0 rings he goes blue.

Again all this information can be found on Super Sonic article if you just search for his name on the search bar.