In *this* case, the first claimant has the option of accepting or denying other claims for the character. Other squads do different things, though the Witch/Knights squad doesn't do claims at all (too few characters).
It's basically pointless, but... It's just something we do. I can't really explain it any better than that.
the guessing does not end until the end of the month and the pics that are there are only partials anyway. I can get you them but they don't really look good since they are only part of a whole. I'll keep my eye open for updates though.