A classic remake
Knuckles knuckles is actually in my opinion the one of the easiest characters to control. That you do not have to battle out a camera has much as the others. That knuckles does not get that many upgrade either I think he only gets two upgrades. So knuckles may be one of the easiest controllable characters. I must say good luck treasure hunting. E-102 Gamma E-102 Gamma is one of my favorite characters in this game is controlls play pretty well though you may find his aiming a little bit awkward and also gamma rarely gets upgrades the only one I can think of is the hover thing so he can float for a short amount of time. That the camera for gamma is not that much glitchy you you will not have a big battle for it. Amy Amy's controlls are also pretty good for movement anyway. The juming higher ability other than pressing the jump button you have to it the hammer on the ground which is pretty decent, but kind of annoying. That you may find Amy one the characters that control with ease.
Big It is Big the cat his size tells a lot about his controlling he moves slow and his stages involve capturing a frog that I do not even know how he keeps losing so many times(he needs a leash on that frog).That big does get some upgrades a floating upgrade and fishing pole upgrades. That is all there is really to say about big the cat.
Graphics Graphics are definitely not the greatest especially when they could be better as I have seen in gamecube's early life. So yea well some of the stages and characters are neat to look at.
Sound The music in the game is great and one of my favorite soundtracks. So may like the music or not differnt people different ears.
Overall
Each character has a different story which I have foun most of sonic's games storlines to be pretty good like this game. You will also find how where each character links into the games storyline. That every character also gets a upgrade of some sort so you may find this game joyable.