Thread:Myself 123/@comment-26253917-20150508002907/@comment-4220590-20150525194639

That profile says nothing where the energy comes from. As for the profile: black on white-time limit.

Okay, then lets look at this then: if the Chaos Emeralds really have unlimited energy as you say, then it is true that Sonic can stay Super Sonic indefinitely. However, the profile clearly states that the form only works for a short time, so he cannot have access to an unlimited energy supply. Ergo, he must use a different source of energy. And since it says this forms drains energy, which we see happen in gameplay, then it can only be Rings then.