Whats the difference between a: llc, s-corp, c-corp,?

Can any of these allow for me to open a savings account with out being accountable for my non-buisness dealings. I want the company that i own not to be avialable to my personal situations where the money may be frozen for a period of time. Its not an irs thing its a personal thing relating to a criminal case. i am in ohio and the income being paid to my company will between 100,000-250,000. i need to have full access(legally) without the goverment being accesable to it for my personal problems until the courts decide everything.