a creature from another planet
He claims that he was abducted by aliens.

a soldier from the Middle Ages
He was even knighted by Pope Pius Ⅴ in 1571.

a person who robs others at sea
pirates robbed him of all his goods, including a consignment of pearls, and of his own clothes.

a man who is thought to have magic powers
A good witch, the Witch of the North, gave Dorothy magic ruby slippers and said that the wizard of Oz could help her go home.