Pelinal Whitestrake. Talos. The Snow Prince. Nerevarine. Champion of Cyrodiil. The Dragonborn. Ysgrammor.
Who do you think is the greatest warrior/hero of Tamriel? Obviously the term 'hero' only applies to certain individuals, as the elves probably do not see Talos as a hero. Is it one of the above, or do you have your own selection?