First, i'm not upset. This isn't that important. Second, this is allegedly a knowledge site, so pointing out that i don't know Roman soldiers ever to have worn a cape from head to foot, and that i don't know Roman soldiers ever to have worn black, is sharing knowledge. Although I can't claim to be one of the world's greatest authorities on the Roman Empire, i am extremely well-informed on the subject.
Third, no that isn't an image of the "soldier." First because we don't know that any such "ghost" actually exists (see below). Second because we don't know that if there were a ghost, that calling that ghost a soldier is correct (see below). Last, the image you present i already saw when i followed Walter's link, and it clearly states "artist's impression," so there is no reason for you to say "here is the soldier."
Most important (and this is why i twice wrote "see below"), this is The Sun
for god's sake; it's a tabloid, and it aspires to be England's trashiest newspaper. Do you really think you're on solid ground to use it as a source for what the "soldier" looks like?