User blog comment:Raymorn/Bioware Co-Founder Dr. Ray Muzyka Speaks Out/@comment-4614261-20120321161333/@comment-128.164.214.116-20120321171537

The statues on Ilos weren't Protheans at all- they were actually made by the Inusannon. Javik mentions that the ruins were there when the Protheans first discovered Ilos.