The Roman emperor was the ruler of the Roman State during the imperial period (starting at about 27 BC). The Romans had no single term for the office although at any given time, a given title was associated with the emperor. If a man was "proclaimed emperor" this normally meant he was proclaimed augustus, or (for generals) imperator (from which English emperor ultimately derives). Several other titles & offices were regularly accumulated by emperors, such as caesar, princeps senatus, consul and Pontifex Maximus. The power of emperors was generally based on the accumulation of powers from republican offices and the support of the army.
Roman emperors refused to be considered "kings", instead claiming to be leaders of a republic, however nominal. The first emperor, Augustus, resolutely refused recognition as a monarch. Although Augustus could claim that his power was authentically Republican, his successor, Tiberius, could not convincingly make the same claim. Nonetheless, the Republican institutional framework (senate, consuls, magistracies etc.) was preserved until the very end of the Western Empire.
By the time of Diocletian, emperors were openly "monarchs", but the contrast with "kings" was maintained: Although the imperial succession was, de facto, generally hereditary, it was only hereditary if there was a suitable candidate acceptable to the army and the bureaucracy so the principle of automatic inheritance was not adopted. The Eastern (Byzantine) emperors ultimately adopted the formal title of Basileus, which had meant king in Greek, but became a title reserved solely for the "Roman" emperor (and the ruler of the Sassanid Empire). Other kings were referred to as regas.
A statue is a sculpture in the round representing a person or persons, an animal, an idea (allegory) or an event, normally full-length, as opposed to a bust, and at least close to life-size, or larger. Its primary concern is representational.
The definition of a statue is not always clear-cut; sculptures of a person on a horse, called Equestrian statues, are certainly included, and in many cases, such as a Madonna and Child or a Pietà, a sculpture of two people will also be. A small statue, usually small enough to be picked up, is called a statuette or figurine.
Many statues are built on commission to commemorate a historical event, or the life of an influential person. Many statues are intended as public art, exhibited outdoors or in public buildings for the edification of passers-by, with a larger magnitude than normal words could ever have for the common man.
On rare occasions, statues themselves become historic and inspire their own historic events. In 1986, when the Statue of Liberty marked her one-hundredth anniversary, a three-day centennial celebration in her honor attracted 12 million. The guest list was unique. "We invited all the great statues of the world to her birthday party and created giant puppets to represent them," said Jeanne Fleming, director of the event. "Each one arrived accompanied by native music."
There is an urban legend concerning a code for mounted statues, whereby the horse's hooves are supposed to indicate how the rider met his end. One hoof off the floor would indicate the rider died of wounds received in battle, or perhaps was just wounded in battle; two hooves off the floor would indicate the rider was killed in battle. An examination of the equestrian statues in most major European cities shows this is not true. If it ever was true, the practice appears to have died out in the 19th century.