Missing the option 'none of them' but if I have to vote for someone it would be sonic. The duo of sonic and tails vs Dr. Robotnica/Eggman is the only one I accept. The rest of the characters are needless filler/pointless plots/useless as heck and should be shot and gutted ASAP.
In fact, as Yahtzee said it 'Sonic doesn't need a new game, he needs help. Specifically the kind of help that involves taking him behind the shed and tearfully putting both barrelfulls through his confused oblivious little head. Stuff him, mount him, repurpose him as a litter picking device.' pretty much sums up my feelings of the entire Sonic franchize from over the last decade.
Also, zinen, please at least try to write understandable english. And welcome to the Escapist.