Emperors of the Incas
The quick development of the Inca civilization led to the quick need to have a leader. Their very first emperor was Manco Capac. Around the 13th century is when Manco started his family dynasty. Manco helped lead the Incas to a quick acceleration in growth and power. The quickest acceleration in growth though was with Pachacuti. Pachacuti was able to have such growth by sending out spies to see how that region kept strength and organization in that village. Then he sent messengers with expensive gifts to those places and asked them to join the Inca Empire. At this point in Inca expansion most regions agreed to avoid losing a battle with them. Pachacuti than created a more political empire. The whole empire together spanned from Ecuador to Chile. Puchacuti's son, Tupac Inca Yupanqui kept the dynasty going. When Pachacuti was still emperor Tupac was the head of the army and kept their land growth extending northwards. Tupac's greatest win was against Chimor, a very powerful nation in those days. Tupac's son, Huayna Capac also added a good amount of land to the south. He was the ruler when the Inca's reached their peak in posterity.
Short time for so many emperors
The Inca empire didn't last for more than three centuries and they had so many emperors in that time period. It'd be almost impossible for me to write about them here. I included a video that has a good list of the emperors they had.
Emperor Tupac
He was legit.
A video list of Inca emperors
Sources
http://www.machupicchu-inca.com/inca-emperors.html
http://incas.mrdonn.org/lords.html
http://incas.mrdonn.org/lords.html