User blog comment:Frodo the 9 fingered/A Third Camp?/@comment-4611874-20120812223006/@comment-4611874-20120813203618

They say Romans that act like Greeks, but that doesn't mean they are still Romans. By accident a Greek demigod may have stubled across Camp Jupiter, then realizing that he/she was different from the Romans, and left. The Romans didn't know about the Greek demigods until now. They thought they were the only one of their kind.