Who is Alexander The Great from Time's Eye and what is their importance?

Alexander is short and stocky like most Macedonians. He has brown hair parted in the center and long enough to touch his shoulders. He is clean-shaved, and has a strong, broad face that is weather beaten red. He eyes are steady and piercing, and he holds his head tilted oddly a little to the left, making him resemble the Princess Diana. He wears a long sleeved tunic and a purple cloak inlaid and edged in gold with patterns of sunbursts and figures. He is an intelligent leader who understands that to lead requires respect not fear.