Can Sturm be unlock?

Sturm was the name of one of the founders of Strum, Ruger and Co.

well for the wii you shake the remote, but for the PS3 you have to press LT RT a couple of times. Hope that helps you. Edit...

You either keep battleing in your ladder, or you could try doing A or S ranked missions, I'm pretty sure it's one of those missions. It might tell you who you could unlock.

If you're thinking of the Sonic Riders character, you cannot unlock him in Brawl.

ITS CALLED SUPER SMASH BROS, Sonic isn't even in it until the 3rd installment.classic is not unlocked, just go into solo mode.