Riki was born middle child to the great dynasty of Tahlin. With an older brother groomed for the throne, and a younger brother coddled and kept, Riki, the small middle son, seemed born for the art of invisibility. It was an art he cultivated, and one which ultimately saved his life on the night that his people were betrayed and his family slaughtered. Of all the royal line, he alone escaped, small and agile, unassuming, using smoke as cover. He cut his way out of the royal grounds, using the advantage of surprise, quietly slitting the throats of one enemy warrior after another. Now free of his royal responsibilities, Riki uses his talents in service to a new trade: Stealth Assassin. He silences his enemies, sharpening his skills, hoping to one day take revenge on those who killed his family and robbed him of his birthright.
Source: The Game Website.